Article
Metallurgy & Metallurgical Engineering
Jin Qin, Zhi Li, Ming-yang Ma, Dan-qing Yi, Bin Wang
Summary: This study investigated the microstructures, intergranular corrosion (IGC), stress corrosion cracking (SCC), and crack propagation behaviors of 5083 Al alloy sheets with different grain sizes. The results showed that samples with larger grain sizes exhibited better IGC resistance, while samples with smaller grain sizes exhibited better SCC resistance. Grain refinement improved SCC resistance by increasing the number of grain boundaries, and grains with specific orientations hindered crack propagation.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Engineering, Mechanical
Daochen Feng, Zhengyang Li, Wenjian Zheng, Zhou Zhou, Guoben Gao, Jianguo Yang, Zengliang Gao
Summary: This study analyzed the causes of leakage near the weld of an outdoor pressure pipe in a petrochemical plant using systematic characterization methods. It was found that the crack originated from the outside and extended to the inside surface of the pipe wall, with massive corrosion products on the crack surface. Furthermore, the damaged parts of the external insulating layer were wet and accumulated chlorine, indicating corrosive environment to the pipe material. It was concluded that the pipe leakage was due to the interaction of pitting corrosion, transgranular corrosion, and stress corrosion cracking.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Mathematics, Applied
Soukaina Riad, Didier Bardel, Julien Rethore
Summary: This work introduces a new phase field method for modeling fracture in polycrystalline materials, incorporating anisotropic failure within the grain and considering grain boundaries with finite thickness. The model allows for competition and interactions between intergranular and transgranular fracture, demonstrated through numerical examples of crack initiation and propagation in polycrystalline aggregates.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2021)
Article
Electrochemistry
Sarah J. M. Glanvill, Andrew du Plessis, Steven R. Street, Trevor Rayment, Alison J. Davenport
Summary: In-situ synchrotron X-ray tomography was used to observe the initiation and propagation of pits in an aluminium alloy during corrosion by seawater, revealing the spatial distribution of pit initiation and the non-uniformity of pit propagation.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
A. Poonguzhali, M. Nani Babu, S. Ravi, S. Ningshen, G. Amarendra
Summary: This study investigates the corrosion fatigue crack growth behavior of type 316LN stainless steel and its weldments in a specific medium. It is observed that the weld metal has a higher crack growth rate and exhibits environmentally assisted cracking behavior of Type B.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Electrochemistry
Maria Sofia Hazarabedian, Md Zakaria Quadir, Mariano Iannuzzi
Summary: This study developed a double-loop electrochemical potentiokinetic reactivation (DL-EPR) test based on Cr and Mo depletion to quantify the extent of grain boundary precipitation in Alloy 725. The new approach was shown to be highly reproducible and sensitive in detecting small amounts of grain boundary phases. Additionally, the method revealed clear microstructural inhomogeneities across the thickness of the bars, with increasing inhomogeneities observed with larger bar diameters.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Ricardo Santamaria, Ke Wang, Mobin Salasi, Mariano Iannuzzi, Michael Y. Mendoza, Md Zakaria Quadir
Summary: This study investigates the stress corrosion cracking (SCC) behavior of type 316L stainless steel (SS316L) produced with sinter-based material extrusion additive manufacturing (AM). The study focuses on the influence of sintered microstructures on SCC initiation and crack-branching susceptibility. Results showed that sinter-based AM SS316L was more susceptible to SCC initiation than solution-annealed (SA) wrought SS316L but more resistant than cold-drawn (CD) wrought SS316L in terms of crack initiation time. Sinter-based AM SS316L also exhibited lower crack-branching tendency compared to the two wrought SS316L counterparts.
Article
Materials Science, Multidisciplinary
Magnus Boasen, Carl F. O. Dahlberg, Pal Efsing, Jonas Faleskog
Summary: A multiple mechanism weakest link model for brittle fracture was developed based on experimental observations and micro mechanical analysis, which accurately predicted the fracture characteristics.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2021)
Article
Construction & Building Technology
Mahram Khan, Xiaowei Deng, Yuhang Wang
Summary: Service life prediction of concrete-steel tubular columns in the marine environment is crucial. This study proposes a prediction model that considers cover cracking and crack propagation time, and validates it experimentally. The model shows that considering these factors can extend the service life by up to 20%. Additionally, a practical model for predicting residual mechanical performance is developed.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Mechanical
Menghao Liu, Zhigao Wang, Fangyuan Lu, Cuiwei Du, Xiaogang Li
Summary: This study investigates the failure cause of a cracked 304SS nut exposed to a rural atmosphere. The analysis of crack morphology and corrosion products reveals that intergranular corrosion cracking is the primary failure mode. The excessive amounts of carbon and sulfur in the material significantly reduce its corrosion resistance and toughness, leading to the failure. It is demonstrated that failure of 304SS can occur even in a mild environment as long as the material is sensitized.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Materials Science, Multidisciplinary
Edwin Chiu, Michael J. Demkowicz, Ankit Srivastava
Summary: The resistance of polycrystalline materials to intergranular fracture can be increased by introducing a minority fraction of weak interfaces, with greater toughening effect observed for weaker interfaces. The steady-state crack growth resistance may not be optimal in a polycrystal containing exclusively high toughness interfaces.
Article
Chemistry, Physical
Jijun Ma, Jing Sun, Quanmei Guan, Qingwei Yang, Jian Tang, Chengxiong Zou, Jun Wang, Bin Tang, Hongchao Kou, Haisheng Wang, Jun Gao, Jinshan Li, William Yi Wang
Summary: The comprehensive study of the localized corrosion and stress corrosion cracking behaviors of a commercial 6005A-T6 aluminum extrusion profile revealed the evolution of local microstructures at crack tips, along with potential strategies to enhance SCC resistance in Al-Mg-Si alloys through interfacial engineering.
Article
Nuclear Science & Technology
Geon Woo Jeon, Sung Woo Kim, Dong Jin Kim, Chang Yeol Jeong
Summary: A new rupture disk corrosion test (RDCT) method was developed to detect stress corrosion cracking (SCC) initiation of Alloy 600 in a primary water environment. The RDCT method involved exposing one side of a disk specimen to simulated primary water at high temperature and pressure while maintaining the other side at ambient pressure. This induced dome-shaped deformation and tensile stress on the specimen. Real-time detection of specimen rupture or water leakage was achieved using a pressure gauge. The tensile stress on the disk specimen was calculated using finite element analysis and found to increase with decreasing specimen thickness. The SCC initiation time decreased with decreasing specimen thickness due to increased applied stress. Intergranular fracture cracks, characteristic of SCC in the primary water environment, were observed on the specimen surface after the SCC initiation test.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Da Wang, Sirui Liu, Changquan Xiao, Xianfeng Ma, Yulin Sun, Ganfeng Yuan, Jun Zeng, Yuqiang Liang, Yanying Hu, Fenglei Niu, Xing Gong
Summary: The corrosion mechanism of 15-15Ti and 316Ti austenitic stainless steels exposed to liquid lead-bismuth eutectic (LBE) at 550 degrees C was studied. The oxides formed on the steels have a dual- or triplex-layered structure. Higher Cr content in the oxides inhibits Ni diffusion better. Local dissolution attack leads to the formation of a Ni-rich recrystallization area with fine grain fcc phase. Preferential intergranular oxidation (PIO) in random grain boundaries of 15-15Ti induces intergranular cracking, while annealing twin boundaries are more resistant to cracking. 316Ti with smaller grains shows higher corrosion resistance and intergranular cracking resistance.
Article
Engineering, Mechanical
Menghao Liu, Zhuoyan Ni, Cuiwei Du, Zhiyong Liu, Meihui Sun, Endian Fan, Qiuyu Wang, Xiaojia Yang, Xiaogang Li
Summary: The investigation revealed that the failure of a heavily cracked geothermal water convection tube was caused by stress corrosion cracking induced by chloride in the service environment and sensitization of the matrix. Additionally, residual stress arising from the manufacturing process also promoted the failure process.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Materials Science, Multidisciplinary
Yoann Guilhem, Stephanie Basseville, Francois Curtit, Jean-Michel Stephan, Georges Cailletaud
MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
(2018)
Article
Materials Science, Multidisciplinary
C. N. N'Guyen, F. Barbe, N. Osipov, G. Cailletaud, B. Marini, C. Petry
COMPUTATIONAL MATERIALS SCIENCE
(2012)
Article
Materials Science, Multidisciplinary
Kacem Sai, Lakhdar Taleb, Georges Cailletaud
COMPUTATIONAL MATERIALS SCIENCE
(2012)
Article
Materials Science, Multidisciplinary
Yoann Guilhem, Stephanie Basseville, Francois Curtit, Jean-Michel Stephan, Georges Cailletaud
COMPUTATIONAL MATERIALS SCIENCE
(2013)
Article
Engineering, Multidisciplinary
I. Gueye, S. El Arem, F. Feyel, F-X Roux, G. Cailletaud
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
(2011)
Article
Engineering, Mechanical
C. Guillemer, M. Clavel, G. Cailletaud
INTERNATIONAL JOURNAL OF PLASTICITY
(2011)
Article
Engineering, Mechanical
Lakhdar Taleb, Georges Cailletaud
INTERNATIONAL JOURNAL OF PLASTICITY
(2011)
Article
Engineering, Mechanical
Michael Fischlschweiger, Georges Cailletaud, Thomas Antretter
INTERNATIONAL JOURNAL OF PLASTICITY
(2012)
Article
Engineering, Mechanical
C. Gerard, G. Cailletaud, B. Bacroix
INTERNATIONAL JOURNAL OF PLASTICITY
(2013)
Article
Nanoscience & Nanotechnology
K. Sai, L. Laiarinandrasana, I. Ben Naceur, J. Besson, M. Jeridi, G. Cailletaud
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2011)
Article
Nanoscience & Nanotechnology
N. Saintier, G. Cailletaud, R. Piques
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2011)
Article
Nanoscience & Nanotechnology
R. Martinez, V. Russier, J. P. Couzinie, I. Guillot, G. Cailletaud
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2013)
Article
Mechanics
Michael Fischlschweiger, Thomas Antretter, Georges Cailletaud
MECHANICS RESEARCH COMMUNICATIONS
(2013)
Article
Metallurgy & Metallurgical Engineering
C. Guillemer, M. Clavel, G. Cailletaud
REVUE DE METALLURGIE-CAHIERS D INFORMATIONS TECHNIQUES
(2012)
Proceedings Paper
Materials Science, Multidisciplinary
M. Fischlschweiger, E. R. Oberaigner, T. Antretter, G. Cailletaud
BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES 2011
(2011)
Article
Materials Science, Multidisciplinary
Y. Liu, K. Zweiacker, C. Liu, J. T. McKeown, J. M. K. Wiezorek
Summary: The evolution of rapid solidification microstructure and solidification interface velocity of hypereutectic Al-20at.%Cu alloy after laser melting has been studied experimentally. It was found that the formation of microstructure was dominated by eutectic, alpha-cell, and banded morphology grains, and the growth modes changed with increasing interface velocity.
Article
Materials Science, Multidisciplinary
Bharat Gwalani, Julian Escobar, Miao Song, Jonova Thomas, Joshua Silverstein, Andrew Chihpin Chuang, Dileep Singh, Michael P. Brady, Yukinori Yamamoto, Thomas R. Watkins, Arun Devaraj
Summary: Castable alumina forming austenitic alloys exhibit superior creep life and oxidation resistance at high temperatures. This study reveals the mechanism behind the enhanced creep performance of these alloys by suppressing primary carbide formation and offers a promising alloy design strategy for high-temperature applications.
Article
Materials Science, Multidisciplinary
Jian Song, Qi Zhang, Songsong Yao, Kunming Yang, Houyu Ma, Jiamiao Ni, Boan Zhong, Yue Liu, Jian Wang, Tongxiang Fan
Summary: Recent studies have shown that achieving an atomically flat surface for metals can greatly improve their oxidation resistance and enhance their electronic-optical applications. Researchers have explored the use of graphene as a covering layer to achieve atomically flat surfaces. They found that high-temperature deposited graphene on copper surfaces formed mono-atomic steps, while annealed copper and transferred graphene on copper interfaces formed multi-atomic steps.
Article
Materials Science, Multidisciplinary
Jennifer A. Glerum, Jon-Erik Mogonye, David C. Dunand
Summary: Elemental powders of Al, Ti, Sc, and Zr are blended and processed via laser powder-bed fusion to create binary and ternary alloys. The microstructural analysis and mechanical testing show that the addition of Ti results in the formation of primary precipitates, while the addition of Sc and Zr leads to the formation of fine grain bands. The Al-0.25Ti-0.25Zr alloy exhibits comparable strain rates to Al-0.5Zr at low stresses, but significantly higher strain rates at higher stresses during compressive creep testing. Finite element modeling suggests that the connectivity of coarse and fine grain regions is a critical factor affecting the creep resistance of the alloys.
Article
Materials Science, Multidisciplinary
P. Jannotti, B. C. Hornbuckle, J. T. Lloyd, N. Lorenzo, M. Aniska, T. L. Luckenbaugh, A. J. Roberts, A. Giri, K. A. Darling
Summary: This work characterizes the thermo-mechanical behavior of bulk nanocrystalline Cu-Ta alloys under extreme conditions. The experiments reveal that the alloys exhibit unique mechanical properties, behaving differently from conventional nanocrystalline Cu. They do not undergo grain coarsening during extrusion and exhibit behavior similar to coarse-grained Cu.
Article
Materials Science, Multidisciplinary
Yiqing Wei, Jingwei Li, Daliang Zhang, Bin Zhang, Zizhen Zhou, Guang Han, Guoyu Wang, Carmelo Prestipino, Pierric Lemoine, Emmanuel Guilmeau, Xu Lu, Xiaoyuan Zhou
Summary: This study proposes a new strategy to modify microstructure by phase regulation, which can simultaneously enhance carrier mobility and reduce lattice thermal conductivity. The addition of Cu in layered SnSe2 induces a phase transition that leads to increased grain size and reduced stacking fault density, resulting in improved carrier mobility and lower lattice thermal conductivity.
Article
Materials Science, Multidisciplinary
Jia Chen, Zhengyu Zhang, Eitan Hershkovitz, Jonathan Poplawsky, Raja Shekar Bhupal Dandu, Chang-Yu Hung, Wenbo Wang, Yi Yao, Lin Li, Hongliang Xin, Honggyu Kim, Wenjun Cai
Summary: In this study, the structural origin of the pH-dependent repassivation mechanisms in multi-principal element alloys (MPEA) was investigated using surface characterization and computational simulations. It was found that selective oxidation in acidic to neutral solutions leads to enhanced nickel enrichment on the surface, resulting in reduced repassivation capability and corrosion resistance.
Article
Materials Science, Multidisciplinary
X. Y. Xu, C. P. Huang, H. Y. Wang, Y. Z. Li, M. X. Huang
Summary: The limited slip systems of magnesium (Mg) and its alloys hinder their wide applications. By conducting tensile straining experiments, researchers discovered a rate-dependent transition in the dislocation mechanisms of Mg alloys. At high strain rates, glissile dislocations dominate, while easy-glide dislocations dominate at low strain rates. Abundant glissile dislocations do not necessarily improve ductility.
Article
Materials Science, Multidisciplinary
M. S. Szczerba, M. J. Szczerba
Summary: Inverse temperature dependences of the detwinning stress were observed in face-centered cubic deformation twins in Cu-8at.%Al alloy. The detwinning stress increased with temperature when the pi detwinning mode was involved, but decreased when the pi/3 mode was involved. The dual effect of temperature on the detwinning stress was due to the reduction of internal stresses pre-existing within the deformation twins. The complete reduction of internal stresses at about 530 degrees C led to the equivalence of the critical stresses of different detwinning modes and a decrease in the yield stress anisotropy of the twin/matrix structure.
Article
Materials Science, Multidisciplinary
Taowen Dong, Tingting Qin, Wei Zhang, Yaowen Zhang, Zhuoran Feng, Yuxiang Gao, Zhongyu Pan, Zixiang Xia, Yan Wang, Chunming Yang, Peng Wang, Weitao Zheng
Summary: The interaction between the electrode and the electric double layer (EDL) significantly influences the energy storage mechanism. By studying the popular alpha-Fe2O3 electrode and the EDL interaction, we find that the energy storage mechanism of the electrode can be controlled by modulating the EDL.
Article
Materials Science, Multidisciplinary
Matthew R. Barnett, Jun Wang, Sitarama R. Kada, Alban de Vaucorbeil, Andrew Stevenson, Marc Fivel, Peter A. Lynch
Summary: The elastic-plastic transition in magnesium alloy Mg-4.5Zn exhibits bursts of deformation, which are characterized by sudden changes in grain orientation. These bursts occur in a coordinated manner among nearby grains, with the highest burst rate observed at the onset of full plasticity. The most significant burst events are associated with twinning, supported by the observation of twinned structures using electron microscopy. The bursts are often preceded and followed by a stasis in peak movement, indicating a certain "birth size" for twins upon formation and subsequent growth at a later stage.
Article
Materials Science, Multidisciplinary
Vaidehi Menon, Sambit Das, Vikram Gavini, Liang Qi
Summary: Understanding solute segregation thermodynamics is crucial for investigating grain boundary properties. The spectral approach and thermodynamic integration methods can be used to predict solute segregation behavior at grain boundaries and compare with experimental observations, thus aiding in alloy design and performance control.
Article
Materials Science, Multidisciplinary
Feiyu Qin, Lei Hu, Yingcai Zhu, Yuki Sakai, Shogo Kawaguchi, Akihiko Machida, Tetsu Watanuki, Yue-Wen Fang, Jun Sun, Xiangdong Ding, Masaki Azuma
Summary: This study reports on the negative and zero thermal expansion properties of Cd2Re2O7 and Cd1.95Ni0.05Re2O7 materials, along with their ultra-low thermal conductivity. Through investigations of their structures and phonon calculations, the synergistic effect of local structure distortion and soft phonons is revealed as the key to achieving these distinctive properties.
Article
Materials Science, Multidisciplinary
Thomas Beerli, Christian C. Roth, Dirk Mohr
Summary: A novel testing system for miniature specimens is designed to characterize the plastic response of materials for which conventional full-size specimens cannot be extracted. The system has an automated operation process, which reduces the damage to specimens caused by manual handling and improves the stability of the test results. The experiments show that the miniature specimens extracted from stainless steel and aluminum have high reproducibility, and the results are consistent with those of conventional-sized specimens. A correction procedure is provided to consider the influence of surface roughness and heat-affected zone caused by wire EDM.
Article
Materials Science, Multidisciplinary
Rani Mary Joy, Paulius Pobedinskas, Nina Baule, Shengyuan Bai, Daen Jannis, Nicolas Gauquelin, Marie-Amandine Pinault-Thaury, Francois Jomard, Kamatchi Jothiramalingam Sankaran, Rozita Rouzbahani, Fernando Lloret, Derese Desta, Jan D'Haen, Johan Verbeeck, Michael Frank Becker, Ken Haenen
Summary: This study investigates the influence of film microstructure and composition on the Young's modulus and residual stress in nanocrystalline diamond thin films. The results provide insights into the mechanical properties and intrinsic stress sources of these films, and demonstrate the potential for producing high-quality nanocrystalline diamond films under certain conditions.