Article
Materials Science, Multidisciplinary
M. J. R. Sandim, V Mauro, S. S. M. Tavares, K. D. Zilnyk, H. R. Z. Sandim
Summary: The annealing behavior of cold-rolled 317L austenitic stainless steel was investigated, revealing the occurrence of austenite reversion, decrease of delta ferrite, and massive sigma phase precipitation within certain temperature and time intervals. At 800 degrees C, the steel is almost fully recrystallized, except for the eye-shaped structures which have less intense precipitation internally. Precipitation of sigma phase preferentially occurs at the delta ferrite lamellae.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
H. Ashrafi, M. Shamanian, R. Emadi, M. Sanayei, F. Farhadi, J. A. Szpunar
Summary: The microstructure and microtexture of a dual-phase (DP) steel were investigated using the electron backscattered diffraction (EBSD) technique. It was found that cold-rolling and intercritical annealing significantly affected the texture in DP600 steel, with notable differences in misorientation and dislocation density between different regions of the microstructure.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Nanoscience & Nanotechnology
Matruprasad Rout, V. Murugabalaji
Summary: In this study, single-pass hot rolling was conducted on 304LN austenitic stainless steel at different initial sample temperatures. Tensile samples were prepared to investigate the variation in through-thickness tensile properties. The microstructure of the rolled samples was examined using the electron backscattered diffraction (EBSD) technique. Significant differences in ultimate tensile strength (UTS) were observed for the surface of samples rolled at 900 degrees C and 1100 degrees C, while the UTS values along the thickness direction did not differ much for samples rolled at 1000 degrees C. A significant deviation in total elongation was observed for the surface sample. Strain hardening exponent (n), strength coefficient (K), and strain hardening rate (theta) were considered to study the difference in tensile behavior. The through-thickness tensile properties were correlated to the microstructure and texture, which played an important role in the behavior.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Sudipta Pramanik, Satyam Suwas
Summary: Microstructural evolution in heavily cold-rolled and annealed Fe-6.8Al low-density steel was investigated in this study. Cold rolling induced a strong {001}<110> texture evolution, and recrystallization resulted in the formation of {111}110 component and other weak intensity γ fiber orientations. The recrystallized grains nucleated near the boundaries of deformed grains and were bounded by high angle grain boundaries.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Materials Science, Multidisciplinary
S. Narayanswamy, R. Saha, P. P. Bhattacharjee
Summary: The study found that the evolution of microstructure in pearlite is influenced by cross-rolling, resulting in differences in lamellar structure, shear bands, and bent lamellae.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Tushar R. Dandekar, Amit Kumar, Rajesh K. Khatirkar, Deepak Kumar, Satyam Suwas
Summary: The effect of microstructure and texture on the evolution of mechanical properties during recrystallization in cold rolled UNS S32101 lean duplex stainless steel sheet was investigated. The results showed that the microstructure changed from lamellar to near globular as the annealing time increased. The crystallographic texture weakened after recrystallization, leading to a decrease in hardness and stored energy.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
T. Nakata, C. Xu, S. Kamado
Summary: After cold-rolling an Mg-6Zn-0.3Ca alloy sheet with a strong basal texture, anomalous double twinning occurred with the (0001) pole aligned to the transverse direction. These twins served as nucleation sites for statically recrystallized grains during annealing, resulting in weak texture features in the annealed sheet with transverse-direction split (0001) poles.
MATERIALS CHARACTERIZATION
(2021)
Article
Engineering, Mechanical
M. Gaier, H-T Lin, Z. N. Farhat, K. P. Plucknett
Summary: This study demonstrates the feasibility of using a heat treatable binder phase for TiC-based cermets, showing a significant increase in hardness and scratch resistance with heat treatment. The research provides insights into the effects of heat treatments on stainless steels in metal ceramic composites.
Article
Materials Science, Multidisciplinary
L. Y. Zhao, H. Yan, R. S. Chen, En-Hou Han
Summary: The study tracked the static recrystallization process of a cold-rolled Mg-Zn-Gd alloy using a quasi-in-situ electron backscatter diffraction method, revealing that the orientation distribution of nuclei is associated with nucleation mechanism. Continuous and discontinuous static recrystallization nuclei have different orientation characteristics.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Fatih Hayat, Cihangir Tevfik Sezgin
Summary: The novel high-manganese steel (HMS) underwent pack boriding process at different temperatures and durations resulting in saw-tooth morphology similar to low alloy steels, significant increase in thickness and hardness of the boride layer, and improved wear resistance and service life of the components. The study also revealed the presence of silicon-rich zones and identified the formation mechanism as compact transfer of silicones (CTS).
Article
Metallurgy & Metallurgical Engineering
Xin Wang, Dikai Guan
Summary: The nucleation and grain growth of 34 coarse grains were tracked using a quasi-in-situ EBSD method. Most grains did not have a basal orientation, and no preferential grain growth or special types of grain boundaries were observed. Nine coarse grains nucleated from deformed grain boundaries, mainly within dislocation cells or subgrains in deformed grain interiors. The growth behavior of these grains can be explained by abnormal subgrain growth rarely reported in Mg alloys. The coarse basal grains did not show any growth advantage compared to other non-basal grains, resulting in a weak basal texture in the AZ31B alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Abhishek Sharma, Yoshiaki Morisada, Toru Nagaoka, Hidetoshi Fujii
Summary: This study reports on the microstructural characterization and tensile deformation behaviour of pure aluminum billets manufactured through the combination of spark plasma sintering (SPS), cold rolling, and friction stir processing (FSP). The results show that the grain size is reduced and grain boundary characteristics are improved during this process, leading to enhanced tensile properties.
MATERIALS CHARACTERIZATION
(2022)
Article
Engineering, Mechanical
G. Suresh Kumar, L. A. Kumaraswamidhas
Summary: This article examines the failures of cabin sheet metal panels in depth, analyzing the correlation between failures in different segments of truck cabins. By evaluating the distribution and classifying the failures, their correlation coefficients are determined. The investigation also determines the frequency of failures in cabin-in white structural panels and cabin mount elastomeric bushings, as well as the cause of fractures in cabin panels due to elastomer mounts rotating out of position. Experimental results confirm the existence of high stress zones predicted by finite element modeling and preventive measures are proposed.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Metallurgy & Metallurgical Engineering
Tatsuya Morikawa, Ryuta Kurosaka, Masaki Tanaka, Takeru Ichie, Ken-ichi Murakami
Summary: This study investigates the strain distribution in grains with a preferred orientation in a cold-rolled steel plate. The results show that the average strains in grains with different preferred orientations are almost the same, but the strain distribution width of gamma-fiber grains is approximately twice that of grains with other orientations, indicating a more pronounced deformation inhomogeneity for gamma-fiber-oriented grains during cold-rolling.
ISIJ INTERNATIONAL
(2022)
Article
Engineering, Mechanical
Aman Gupta, Tae-Hyeon Yoo, Lalit Kaushik, Jin Woo Lee, Young-Kil Kim, Shi-Hoon Choi
Summary: This study investigates the evolution of microstructural and crystallographic texture in electrolytic tough-pitch copper, subjected to room-temperature-rolled and cryogenic-rolled processes. The severely deformed specimens showed deformed and recrystallized grains, with static recrystallization observed at room temperature. The nucleation of small grains was attributed to discontinuous and continuous static recrystallization, as well as particle-stimulated nucleation around Cu2O particles. The texture intensity of the specimens was influenced by deformation and static recrystallization phenomena. The cryogenic-rolled specimens exhibited stronger texture compared to room-temperature-rolled specimens at intermediate reductions, while the latter showed stronger texture intensity at higher deformation. The hardness values of the cryogenic-rolled specimens were relatively higher than those of the room-temperature-rolled specimens, and the time-dependent decay in hardness values was attributed to room-temperature recovery and recrystallization.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Materials Science, Multidisciplinary
Shuai Zhang, Shuye Zhang, Hongzhi Zhou, Kyung-Wook Paik, Tianran Ding, Weimin Long, Sujuan Zhong, Peng He
Summary: Microwave Hybrid Heating (MHH) is a promising method for material joining, allowing for selective and uniform heating. This experimental study focused on investigating the characteristics and reliability of joints made using nano-Sn-3.0Ag-0.5Cu soldering paste and MHH technique. The research findings showed that the shear strength of the joints reached its peak value under specific microwave power and exposure time, but decreased after thermal shock tests.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Peibin Ma, Mingyang Wang, Aiying Chen, Lijian Gu, Zhiyi Ding, Xiaogui Wang, Bin Gan
Summary: Nano-twinned boundaries in high-temperature alloys play a crucial role in regulating the distribution of nano-precipitates and enhancing mechanical properties.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Jiachen Zhang, Fan Lu, Xinxin Liu, Taiwen Huang, Rui Li, Changsheng Tan, Guojun Zhang, Lin Liu
Summary: This study investigates the effects of Re and Ta interactions on the precipitation of the TCP phase in experimental alloys under long-term thermal exposure. The study finds that microstructure segregation is not fully eliminated even with standard heat treatment, and the interaction between Re and Ta enhances the formation of the TCP phase. Thermodynamic calculations and first-principles analysis reveal that Re significantly improves the driving force of TCP phase precipitation. The study also observes a phase transition from the sigma-phase to the P-phase, with Ni playing a crucial role in the diffusion process.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Ronit Roy, Adil Shaik, Matthew Topping, Fei Long, Mark R. Daymond
Summary: This study demonstrates the improvements in characterizing localized dislocation distribution using the HR-EBSD method compared to the conventional approach. Two extreme examples of deformation conditions were investigated to show the efficacy of HR-EBSD in identifying dislocations and subtle features. The direct correlation between slip bands and HR-EBSD estimated GNDs is also presented, enhancing the scope of this approach in identifying individual slip bands.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Wenshan Guo, Hui Zhang, Qingjun Zhou, Guangchun Xiao, Ning Guo, Wei Zhao, Gang Wang
Summary: The microstructures and corrosion resistance of TC11 components were significantly improved using a high-power, high-speed laser metal deposition (LMD) process and subsequent post-heat treatment, with greater improvements observed in the deposition direction. The significant improvement of corrosion resistance in the deposition direction is mainly due to the weakening of the charged galvanic corrosion effect between the non-interlayer zone and interlayer zone.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Shuai Xu, Rui Cao, Junheng Gao, Yu Zhang, Haitao Zhao, Shuize Wang, Yuhe Huang, Guilin Wu, Honghui Wu, Chaolei Zhang, Xinping Mao
Summary: In this study, the microstructures and mechanical properties of interphase precipitation strengthening micro-alloyed steels were investigated. The addition of Cr was found to increase the yield strength without significant decrease of ductility. Thermodynamics analysis revealed that the addition of Cr led to grain refinement and decrease of sheet spacing of nanoprecipitates. Calculations showed that the decrease of interphase-precipitated carbides sheet spacing and the refinement of grain size were responsible for the strength enhancement of Cr microalloyed steel.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zhaoxin Zhong, Biao Zhang, Yuhan Ren, Jian Ye, Jiawei Zhang, Feng Ye
Summary: In this study, bioinspired web-liked multiphase composites were successfully constructed using boron-modified polysilazane polymer. The composites consisted of long TiB nanowires as 'web' and hybrid TiC and Ti3Si particles as 'nodes'. The enhanced strength of these composites was attributed to the synergistic load transfer of the hybrid reinforcements. This study provides a promising design approach for developing high-performance composites with high reinforcement content, utilizing polymer instead of traditional ceramic powder.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Geng Liu, Linran Yu, Jie Su, Ran Ding, Min Xiong, Qi Gao
Summary: In this study, a flash austenitization heat treatment approach was used to achieve a dual-phase microstructure consisting of retained austenite and fine-grained ferrite in low-carbon TRIP steel. Phase-field simulations revealed the acceleration of ferrite transition kinetics in the Mn-depleted region and the influence of chemical heterogeneity of C and Mn on the stabilization of austenite.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zhichao Yang, Dehui Zheng, Zhen Wang, Tingbin Liang, Shuangbao Wang
Summary: In this study, the configurations, formation process, and properties of the Cu-rich layer formed during TJE of Al alloys were revealed using aberration-corrected scanning TEM (STEM), STEM image simulations, and first-principles calculations. The results showed a new orientation relationship between the Cu-rich layer and Al matrix, and provided insights into the formation mechanisms of the Cu-rich layer and Cu diffusion zone.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Shuai Chen, Ruyu Tian, Jiayue Wen, Yanhong Tian
Summary: In this study, the interfacial microstructure evolution and reliability of Cu/Sn-3.0Ag-0.5Cu (SAC305)/Ni and Cu/Sn-3.0Ag-0.5Cu-0.05TiO2 (SAC305-0.05TiO2)/Ni interconnections under thermal shock were investigated. The results showed that the addition of TiO2 nanoparticles can suppress the growth of interfacial IMCs and improve the reliability of the connections.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Yunbin Lu, Yangju Feng, Wei Wang, Wenke Wang, Jianlei Yang, Wenzhen Chen, Guorong Cui, Dongdong Zhuang, Hongyang Cao
Summary: In order to improve the wear resistance of titanium alloy, titanium matrix composites with network distributed TiBw were fabricated. The results showed that the wear rate of the composites decreased by 17.2% at room temperature and 38.4% at high temperature compared to the TA15 alloy. The TiBw in the composites enhanced work hardening, improved thermal conductivity, and effectively hindered dislocation movement and promoted dynamic recrystallization during high-temperature wear.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Jubert Pasco, Lu Jiang, Thomas Dorin, Ali Keshavarzkermani, Youliang He, Clodualdo Aranas Jr
Summary: The unique structure and solute distribution of CoCrMo alloys produced using Laser Powder Bed Fusion technique require custom heat-treating processes to achieve the targeted phase distribution and mechanical properties. This study investigates the phase transformation behavior and precipitate distribution of CoCrMo samples after aging heat treatment. The results show differences in phase fraction and nucleation sites between directly aged and solution heat-treated samples.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zipeng Ma, Meng Zhou, Baohong Tian, Yi Zhang, Heng Li, Xu Li, Jin Zou, Haoyan Hu, Ke Jing, Yong Liu, Alex A. Volinsky
Summary: In this study, two electrical contact composites were prepared using the vacuum hot pressing sintering endo-oxidation method. The addition of Y2O3 had no negative effects on the electrical conductivity and hardness of the composites. Moreover, it reduced the welding force and arc energy, and improved the stability of the contacts.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Wei Sun, Ning Cui, Shuling Zhang, Tiewei Xu, Xiaopeng Wang, Fantao Kong
Summary: A laminated composite was successfully fabricated and its microstructure and mechanical properties were investigated. The composite exhibited high bonding strength, improved flexural strength and fracture toughness, and superior tensile properties compared to the monolithic alloy.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zih-You Wu, Yin-Ku Lee, Su-Yueh Tsai, Po-Yu Chen, Jenq-Gong Duh
Summary: With the development of the artificial intelligence (AI) industries, electronic packaging is advancing towards high density, high efficiency, and multi-functionality. The application of microbumps is necessary to achieve high density and small-scale interconnection. In this study, three types of full intermetallic compounds (IMCs) bumps were fabricated, and the mechanical and thermal properties of IMCs were analyzed. The results showed that the full IMCs bumps with added Ni and Zn exhibited consistent structure and excellent thermal stability, providing a reliable microstructure for application.
MATERIALS CHARACTERIZATION
(2024)