Article
Engineering, Manufacturing
William L. Smith, John D. Roehling, Maria Strantza, Rishi K. Ganeriwala, Ava S. Ashby, Bey Vrancken, Bjorn Clausen, Gabriel M. Guss, Donald W. Brown, Joseph T. McKeown, Michael R. Hill, Manyalibo J. Matthews
Summary: The study successfully reduced residual stress in laser powder bed fusion process using in situ annealing, with noticeable stress reduction on various planes of stainless steel parts. Experimental results were in excellent agreement with numerical simulations, indicating potential for further optimization to reduce processing time.
ADDITIVE MANUFACTURING
(2021)
Article
Materials Science, Multidisciplinary
Xuan Zhang, Peter Kenesei, Jun-Sang Park, Jonathan Almer, Meimei Li
Summary: The room-temperature tensile behavior of AM 316L SS was studied using high-energy X-ray diffraction and X-ray tomography. It was found that AM 316L SS exhibited high dislocation storage capability and an attractive combination of strength and ductility during plastic deformation. The morphological changes of built-in pores in AM 316L SS during deformation and fracture were also revealed to have significant roles in the material's performance.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Som Dixit, Shunyu Liu, Heather A. Murdoch, Pauline M. Smith
Summary: This study focuses on the anisotropic behavior within 2D planes and investigates the mechanisms of mechanical anisotropy in 316L-SS samples fabricated in different build orientations. The dominant contributions to the mechanical anisotropy were found to be crystallographic texture and dislocation density, followed by grain morphology.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Yangyang Lu, Dong Li, Heng Ma, Xiliang Liu, Meihong Wu, Jing Hu
Summary: The research shows that severe plastic deformation can significantly enhance the efficiency of plasma nitriding, increase the thickness and hardness of the nitriding layer, and greatly improve the wear resistance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Automation & Control Systems
Rizwan Abdul Rahman Rashid, Muhammed Awais Javed, Cameron Barr, Suresh Palanisamy, Neil Matthews, Matthew Simon Dargusch
Summary: The mechanical, microstructural, and corrosion properties of single-layer and multi-layer 316L stainless steel coatings deposited on mild steel were analyzed. Results showed that single-layer coatings exhibit better corrosion resistance, while multi-layer coatings with sacrificial layers have better coating hardness.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Daijun Hu, Nicolo Grilli, Lu Wang, Min Yang, Wentao Yan
Summary: Metal additive manufacturing (AM) has gained attention for its ability to produce parts with complex geometry. However, the large temperature gradient during fabrication leads to residual stresses, causing distortion and crack formation. This study uses a computational framework to investigate how residual stresses form and evolve in AM parts at the individual grain scale, and reveals the significant influence of the molten pool shape on residual stress distribution.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2022)
Article
Materials Science, Coatings & Films
Y. Uzun
Summary: This study investigates the tribocorrosion behavior of untreated, plasma nitrided, Ti-DLC coated, and duplex treated AISI 316L stainless steel. The results show that the wear mechanism causes much more damage than corrosive effects. Generally, the wear and tribocorrosion performance of the treated samples increase compared to the untreated sample, thanks to the layers formed on the surface. The best tribocorrosion resistance is observed in the duplex surface-treated sample.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Baogang Zhou, Pingwei Xu, Wei Li, Yilong Liang, Yu Liang
Summary: Significant anisotropy in mechanical properties was observed in 316L stainless steel produced through selective laser melting, with initial deformation occurring rapidly at the boundary of the molten pool. The high-level strength was attributed to high-density dislocations and the fine cellular substructure, with lower ductility obtained when loaded in the longitudinal direction and substantial deformation occurring in the cellular substructure during loading in the transverse direction.
Article
Engineering, Mechanical
Arshad Yazdanpanah, Mattia Franceschi, Gianluca Bergamo, Massimiliano Bonesso, Manuele Dabala
Summary: This study investigated the SCC and electrochemical behavior of selective laser melted 316L stainless steel under the combined effect of surface residual stresses and energy input variation. It was found that there was a significant correlation between columnar subgrains width and pore size with the electrochemical response and SCC susceptibility. A critical pore size affecting local corrosion behavior was identified, which decreased with an increase in residual stress magnitude.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Nuclear Science & Technology
Akash Singh, R. Thirumurugesan, S. Krishnakumar, Revati Rani, S. Chandramouli, P. Parameswaran, R. Mythili
Summary: Enhancement of wear resistance of components used in fast reactors is necessary for long service life. Plasma nitriding is a promising technology to improve hardness and wear resistance. This study characterizes the chrome nitrided SS316L casing ring used in secondary sodium pump and assesses its stability under long term sodium exposure. The results show successful chrome nitriding and retention of the nitrided layer after sodium exposure, although there is a slight decrease in hardness.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Sadaqat Ali, Muhammad Irfan, Usama Muhammad Niazi, Ahmad Majdi Abdul Rani, Imran Shah, Stanislaw Legutko, Saifur Rahman, Mohammed Jalalah, Mabkhoot A. Alsaiari, Adam Glowacz, Fahad Salem AlKahtani
Summary: Powder metallurgy technique is widely used for producing different alloy compositions with desired properties. This research focuses on the addition of titanium and niobium in a stainless steel matrix for potential biomedical applications. The increase in sintering dwell time led to simultaneous sintering and surface nitriding of compositions, resulting in improved corrosion resistance and non-cytotoxicity of the developed alloy compositions.
Article
Materials Science, Multidisciplinary
Ricardo Luiz Perez Teixeira, Jose Carlos de Lacerda, Kevinny Chaves Florencio, Sidney Nicodemos da Silva, Andreia Bicalho Henriques
Summary: This study aims to explore the effects of transformation-induced plasticity (TRIP) induced by cold rolling on AISI 316L grade ASTM F138: 2019, a biomedical material, and its compliance with ISO 5832. Cold rolling of 316L stainless steel is a cost-effective method that provides good surface finish and dimensional accuracy compared to other manufacturing processes. However, the TRIP effect in cold-worked 316L steel can lead to unwanted phases, limiting its use as a biomaterial. Understanding the TRIP effect through cold rolling can enhance its applicability in biomedical engineering.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Mahyar Khorasani, Amir Hossein Ghasemi, Umar Shafique Awan, Sarat Singamneni, Guy Littlefair, Ehsan Farabi, Martin Leary, Ian Gibson, Jithin Kozhuthala Veetil, Bernard Rolfe
Summary: This research focuses on how process parameters in Laser-Based Powder Bed Fusion (LB-PBF) affect meltpool temperature and subsequently microstructure and tensile properties. The study demonstrates that meltpool temperature plays a key role in the evolution of crystallographic features and microstructural characteristics in 316L stainless steel, both during manufacturing and post-manufacturing heat treatment.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Optics
Saad Waqar, Kai Guo, Jie Sun
Summary: The premature fractures, cracks, distortions, and delamination in selective laser melting manufactured components are among the most prominent challenges. Residual stresses are the main causes of these issues. Post processing techniques are commonly used to reduce these stresses, but they increase production time and costs. Therefore, developing in-process techniques to reduce residual stresses is crucial for large-scale production of metallic components.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Anfu Guo, Rongji Tang, Shuai Guo, Yingbin Hu, Xianliang Sheng, Yibao Zhang, Mingkang Zhang, Peng Qu, Shaoqing Wang
Summary: Due to its excellent properties and low cost, 316L stainless steel is widely used in various industries. To further enhance its mechanical properties, scholars have proposed using tungsten carbide as a ceramic additive. However, the agglomeration of tungsten carbide particles often results in defects in the composites. In response to this challenge, the author suggests a novel method combining acoustic field with powder bed fusion to process WC-reinforced 316L SS materials, which has shown promising results in improving the tensile properties of the composites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
M. A. Charpagne, J. M. Hestroffer, A. T. Polonsky, M. P. Echlin, D. Texier, V. Valle, I. J. Beyerlein, T. M. Pollock, J. C. Stinville
Summary: This study investigates the slip localization behavior of the polycrystalline nickel base superalloy Inconel 718 during monotonic tensile loading at room temperature in relation to the 3D microstructure. Statistical analyses revealed strong correlations between slip band locations and specific microstructure configurations, with over half of the slip bands emanating from triple junction lines. Crystal plasticity finite elements calculations were performed on the experimental microstructure to identify the characteristics of slip activity in different microstructure regions.
Article
Materials Science, Multidisciplinary
S. Hemery, J. C. Stinville, F. Wang, M. A. Charpagne, M. G. Emigh, T. M. Pollock, V. Valle
Summary: The study identified a unique crack nucleation mechanism involving strain localization at (0001) twist boundaries in titanium alloys, with crack initiation preferentially occurring at twist angles spanning the 10 degrees - 20 degrees range. The (0001) twist boundaries are preferred locations for early and intense strain localization, and deformation prior to crack initiation proceeds via shear along these boundaries.
Article
Materials Science, Multidisciplinary
M. A. Charpagne, J. C. Stinville, A. T. Polonsky, M. P. Echlin, T. M. Pollock
Summary: A multi-modal data-merging framework is presented to reconstruct slip bands in three dimensions over millimeter-scale fields of view, utilizing a combination of 3D electron back-scattered diffraction (EBSD) measurements and high-resolution digital image correlation (HR-DIC) information. The method involves segmenting features within the strain field and microstructure, aligning datasets, and projecting slip bands into the 3D microstructure based on local crystallographic orientation, demonstrated in two materials: a face-centered cubic (FCC) nickel-base superalloy and hexagonal close-packed (HCP) titanium alloy.
Article
Materials Science, Multidisciplinary
Jonathan M. Hestroffer, Marat Latypov, Jean-Charles Stinville, Marie-Agathe Charpagne, Valery Valle, Matthew P. Miller, Tresa M. Pollock, Irene J. Beyerlein
Summary: This study investigates the evolution of intragranular lattice rotations and slip activity in a high performance, polycrystalline face centered cubic material during monotonic and cyclic loading using a combination of in-situ high-resolution digital image correlation (HR-DIC), Heaviside-DIC method (H-DIC), and crystal plasticity finite element (CPFE). The results show that most grains develop intragranular lattice rotation gradients that span the grain, regardless of their size and lattice orientation. The analysis of slip lines reveals agreement in the active slip systems and changes in local slip activity across individual grains. The findings suggest that deforming grains are divided into sub-granular regions of uniform lattice rotation, most often associated with one or two active slip systems.
Article
Engineering, Mechanical
S. Hemery, J. C. Stinville
Summary: This study monitored the microstructurally small crack growth in Ti-6Al-4V and Ti-6Al-2Sn-4Zr-2Mo with equiaxed and bimodal microstructures. The influence of microstructure on the lifetime variability observed in Ti alloys was evaluated, and primary alpha grains, basal plane cracking, and misalignment across boundaries were identified as key features for high crack growth rates. Dwell periods were found to induce significant small crack acceleration.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Materials Science, Multidisciplinary
Wenrui An, Satoshi Utada, Xiaotong Guo, Stoichko Antonov, Weiwei Zheng, Jonathan Cormier, Qiang Feng
Summary: This study investigates the effects of overheating and thermal cycling on the creep properties and microstructural evolution of a directionally solidified superalloy. The results show that thermal cycling significantly reduces the creep life and leads to severe microstructural degradation.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
J. C. Stinville, W. Ludwig, P. G. Callahan, M. P. Echlin, V. Valle, T. M. Pollock, H. Proudhon
Summary: This study enables imaging of bulk slip events within the 3D microstructure through the combined use of X-ray diffraction contrast tomography and topotomography. Correlative measurements were performed using various methods to validate the observation of slip events and significant differences were found between bulk and surface grains, highlighting the need for 3D observations to better understand deformation in polycrystalline materials.
MATERIALS CHARACTERIZATION
(2022)
Article
Chemistry, Physical
Maxwell Pinz, George Weber, Jean Charles Stinville, Tresa Pollock, Somnath Ghosh
Summary: This paper develops a probabilistic crack nucleation model for the Ni-based superalloy Rene 88DT under fatigue loading using a Bayesian inference approach. The underlying mechanisms driving crack nucleation are identified through a data-driven, machine learning approach. Experimental fatigue-loaded microstructures are characterized to correlate the grain morphology and crystallography to the crack nucleation sites. A multiscale model, incorporating experimental polycrystalline microstructures, is developed for fatigue simulations.
NPJ COMPUTATIONAL MATERIALS
(2022)
Article
Physics, Applied
E. Barraud, T. de Resseguier, J. Baillargeat, S. Hemery, J. Cormier
Summary: In this study, the dynamic behavior of a nickel-based superalloy under shock loading was investigated using laser-launched flyers. It was found that different microstructures and heat treatment conditions significantly influence the dynamic failure mechanisms.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Jean Charles Stinville, Lorena Mataveli Suave, Florent Mauget, Lionel Marcin, Patrick Villechaise, Tresa M. Pollock, Jonathan Cormier
Summary: The low and high temperature transverse creep behavior of a directionally solidified Ni-based superalloy DS200 is investigated in this study. In-situ creep tests with strain measurements are conducted to capture the creep strain evolution in individual crystallographic grains. The microstructure configurations promoting damage nucleation are also identified as a function of the loading condition, with high angle grain boundaries being the preferred sites for crack nucleation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Wenrui An, Satoshi Utada, Stoichko Antonov, Song Lu, Silang He, Fan Lu, Weiwei Zheng, Longfei Li, Jonathan Cormier, Qiang Feng
Summary: Thermal cycling creep tests were conducted on the directionally solidified superalloy DZ125 to simulate overheating conditions. The microstructural evolution and creep mechanism at different stages were characterized. Results showed three creep stages and the harmful effects of decreased gamma' volume fraction and deteriorated grain boundary. The coupled effect of overheating and thermal cycling damage accelerated creep deformation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
M. Huguet, G. Boissonnet, G. Lotte, J. Cormier, P. Villechaise, G. Bonnet, F. Pedraza
Summary: This paper investigates the initial oxidation stages of additive manufactured Rene 65 Ni-based superalloy between 700 and 900 degrees C in air and argon for 48 h, with different building directions and heat treatments. The only factor that impacts the oxidation behavior is the oxidizing atmosphere. The resulting oxide scales are composed of NiCr2O4 and Cr2O3 at 700 degrees C, while at 800 and 900 degrees C, an external Cr2O3 layer forms on top of an internal layer of alpha-Al2O3 due to lower oxygen partial pressure underneath the chromia layer.
Article
Engineering, Mechanical
Cesar-Moises Sanchez-Camargo, Yves Nadot, Jonathan Cormier, Fabien Lefebvre, Wen Hao Kan, Louis Ngai Sum Chiu, Chen Li, Aijun Huang
Summary: A study was conducted on Laser Powder Bed Fusion Inconel 718 to investigate the influence of defects and microstructure on high-cycle fatigue life. It was found that printing orientation had minimal effect on fatigue life, with most failures attributed to lack of fusion defects. The influence of defects was greater at 20 degrees C compared with 650 degrees C. Hot isostatic pressure treatment improved fatigue resistance. Natural cracks propagated in a similar manner to long cracks.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Engineering, Mechanical
Yawei Li, Dong Wang, Yufeng He, Luciana Maria Bortoluci Ormastroni, Li Wang, Jonathan Cormier, Jian Zhang
Summary: The VHCF behavior of a Ni-based single crystal superalloy treated by different processes was studied. HRS and LMC samples showed cracks initiating from casting pores surrounded by a rough zone. The rotation of γ' within the rough zone was related to the operation of {1 1 1}(110) and {111}(11 2) slip systems. HRS+HIP specimens exhibited the best VHCF property with failure mainly occurring on the surface, while LMC process increased VHCF durability similar to HIP treatment, especially under low loading conditions.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Manufacturing
Paul R. Dawson, Matthew P. Miller, Tresa M. Pollock, Joe Wendorf, Leah H. Mills, Jean Charles Stinville, Marie Agathe Charpagne, McLean P. Echlin
Summary: The MechMet software package is a new finite element tool for solving elasticity field equations in polycrystals and investigating microstructure-induced heterogeneity. It can compute various mechanical metrics and generate formatted output files for visualization using Paraview or VisIt.
INTEGRATING MATERIALS AND MANUFACTURING INNOVATION
(2021)
Article
Nanoscience & Nanotechnology
Ahmad Mirzaei, Peter D. Hodgson, Xiang Ma, Vanessa K. Peterson, Ehsan Farabi, Gregory S. Rohrer, Hossein Beladi
Summary: This study investigated the influence of parent austenite grain refinement on the intervariant boundary network in a lath martensitic steel. It found that refining the parent austenite grain led to a decrease in the fraction of certain boundaries in the martensite and an increase in the connectivity of low energy boundaries, ultimately improving the impact toughness.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
N. L. Church, C. E. P. Talbot, L. D. Connor, S. Michalik, N. G. Jones
Summary: Metastable beta Ti alloys based on the Ti-Nb system have attracted attention due to their unique properties. However, the unstable cyclic behavior of these alloys has hindered their widespread industrial use. Recent studies have shown that internal stresses, including those from dislocations, may be responsible for this behavior. This study demonstrates that inter-cycle thermal treatments can mitigate the unstable cyclic behavior, providing a significant breakthrough in our understanding of Ti-Nb superelastic materials.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Di Zhao, Chenchen Zhao, Ziyang Xiu, Jiuchun Yan
Summary: This study proposes a novel strategy for achieving the bonding of SiC ceramic and Al alloy using ultrasound. The ultrasound promotes the dissolution of Al into the solder, activating the solder and triggering the interfacial reaction between SiC ceramic and solder. With increasing ultrasonic duration, the bonding between SiC and Al transitions from partial to full metallurgical bonding.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Kang Du, Yang Zhang, Guangda Zhao, Tao Huang, Liyuan Liu, Junpeng Li, Xiyu Wang, Zhongwu Zhang
Summary: This paper systematically investigated the evolution of microstructure in Fe-Ni-Co-Al polycrystalline alloys and its effects on mechanical properties. The results revealed that the migration of grain boundaries in different processes is driven by different factors, which impacts the grain orientation and precipitate formation. In the process of directional recrystallization, grains with specific orientations grow in the grain boundary region and form the dominant orientation, while grains with lower migration rate form the minor orientation. The alloy produced through directional recrystallization exhibited good recoverable strain and superelastic strain, while the alloy produced through solid solution treatment showed no evident superelastic behavior.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Edohamen Awannegbe, Liang Chen, Yue Zhao, Zhijun Qiu, Huijun Li
Summary: This study employed laser metal deposition to additively manufacture Ti-15Mo wt% alloy, and subsequently subjected it to post-fabrication uniaxial thermomechanical processing. The results showed that different zones in the microstructure remained after processing, and deformation mechanisms mainly involved slip and martensite formation. The compressive mechanical properties were found to be dependent on strain rate, with higher flow stress and compressive strength observed at higher strain rates. Grain structure homogenisation was not achieved, leading to anisotropic tensile properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Reza Khatib Zadeh Davani, Enyinnaya George Ohaeri, Sandeep Yadav, Jerzy A. Szpunar, Jing Su, Michael Gaudet, Muhammad Rashid, Muhammad Arafin
Summary: This research aims to investigate the effect of roughing and finishing reductions on crystallographic texture. The results show significant heterogeneity in the centerline region, with higher intensity of certain textures. Drop Weight Tear Test indicates that steel specimens with lower and medium reductions exhibit superior low-temperature impact toughness compared to steel with higher reductions. The electrochemical hydrogen charging experiments confirm the presence of internal hydrogen cracks only in steel with lower and medium reductions.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Flavio De Barbieri, Denis Jorge-Badiola, Rodrigo Allende, Karem Tello, Alfredo Artigas, Franco Perazzo, Henry Jami, Juan Perez Ipina
Summary: This study examines the effect of Cr additions on the mechanical behavior of TWIP steel at temperatures ranging from 25°C to 350°C. The results indicate that different temperature-dependent strengthening mechanisms, including mechanical twinning, Dynamic Strain Aging, and slip bands, are at play. The stacking fault energy (SFE) influences the percentage of mechanical twinning, which in turn affects the strain hardening rate.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Hanlin Peng, Siming Huang, Ling Hu, Bingbing Luo, Liejun Li, Ian Baker
Summary: This study explores the weldability, microstructures, and mechanical properties of two L1(2)-nanoparticle-strengthened medium-entropy alloys after electron beam welding (EBW). The results show that strong yet ductile defect-free joints were produced, with larger grain sizes in the fusion zones compared to the heat-affected zones and base materials. Both EBWed MEAs exhibited high yield strengths, high ultimate tensile strengths, and good fracture strains at 77 K. The V-doping improved the cryogenic mechanical properties of the TMT MEA.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Yongxin Wang, Lei Chen, Lizi Shao, Shuo Hao, Motomichi Koyama, Xingzhou Cai, Xiaocong Ma, Miao Jin
Summary: This study investigated the tensile deformation behavior of an Mn-N bearing lean duplex stainless steel with metastable austenite. The results showed that the strain rate had significant influence on the work hardening, strain-induced martensitic transformation, and fracture mechanism.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Jong Woo Won, Seulbi Lee, Hye-Jeong Choe, Yong-Taek Hyun, Dong Won Lee, Jeong Hun Lee
Summary: Cold-rolled pure titanium showed improved sheet formability after undergoing cryogenic-deformation treatment. This treatment increased the thinning capability of the titanium and suppressed cracking during sheet forming. The formation of twins during deformation contributed to high thinning capability and increased strength through grain refinement and dislocation accumulation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Handong Li, Lin Su, Lijuan Wang, Yanbin Jiang, Jiahui Long, Gaoyong Lin, Zhu Xiao, Yanlin Jia, Zhou Li
Summary: Homogenization heat treatment is a key procedure in controlling the second phase, enhancing composition uniformity, and workability of as-cast Cu-15Ni-8Sn alloy. This study found that electropulsing treatment (EPT) can significantly reduce treatment temperature and time, improve elongation and overall mechanical properties of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Yuxuan Wang, Juntao Zou, Lixing Sun, Yunfei Bai, Zhe Zhang, Junsheng Cheng, Lin Shi, Dazhuo Song, Yihui Jiang, Zhiwei Zhang
Summary: A novel mechanical-heat-electricity synergistic method was proposed to enhance the mechanical properties of Cu-15Sn-0.3Ti alloy by forming annealing twins (ATs). The combination method of Rotary swaging (RS) and Electric pulse treatment (EPT) successfully induced recrystallization and refinement of the microstructure, leading to a significant increase in the strength of the alloy within a short time.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Zhiyi Ding, Jiangtao Xie, Tong Wang, Aiying Chen, Bin Gan, Jinchao Song
Summary: This study demonstrated the Ta-induced strengthening of CoCrNi-AlTi MEAs using nanoscale heterogeneous coherent precipitates. The addition of Ta and aging treatments significantly enhanced the mechanical properties of the alloy, including yield strength, ultimate tensile strength, and elongation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Z. Y. You, Z. Y. Tang, B. Wang, H. W. Zhang, P. Li, L. Zhao, F. B. Chu, H. Ding
Summary: The mechanical properties and microstructural evolution of C-doped TRIP-assisted HEA under dynamic loading conditions were systematically investigated in this study. The results showed that dynamic tensile deformation led to an increase in yield strength and a decrease in ultimate tensile strength, with a trend towards increased total elongation. The primary deformation mechanisms shifted from TRIP and TWIP effects to deformation twinning and dislocations. The presence of carbides formed through C-doping hindered dislocation slip and promoted the activation of multiple twinning systems.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Feng Qin, Feihu Chen, Junhua Hou, Wenjun Lu, Shaohua Chen, Jianjun Li
Summary: Plastic instability in strong multilayered composites is completely suppressed by architecting nanoscale BCC Nb crystalline-amorphous CuNb interfaces.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)