Article
Chemistry, Physical
Jia Huang, Zhen-zhuo He, Peng-chao Guo, Shuang-qi Lv, Jia-nan Song, He Liu, Zhen-lei Li, Zhi-zhong Fu, Yong-zhao Lv, Yan-tao Sun, Xiao-zhong Huang, Deng-yong Xia
Summary: The deformation regulation and fracture mechanism of single-crystal Ni-based superalloy DD6 under cyclic loading at 980 celcius were investigated, revealing strengthened rupture life and fracture deformation. Observations of the gamma/gamma' interface showed smaller particle spacing, restricting dislocation movement and lowering the creep rate. Cyclic loading/unloading promoted the initiation of surface cracks and the generation of secondary cracks, leading to cyclic strengthening at different scales.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Tian Liu, Xiaonong Cheng, Rui Luo, Yu Cao, Hengnan Ding, Leli Chen, Yuyan Yang, Yu Liu
Summary: The plastic thermal deformation behaviors of solid solution strengthened Ni-based superalloy Inconel 617B at different temperatures were systematically investigated, with the steady-state stress found to be positively correlated with temperature and the obstruction from M23C6 particles decreasing with the increase in temperature.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Rashad A. Al-Hammadi, Rui Zhang, Chuanyong Cui, Zijian Zhou, Yizhou Zhou
Summary: The effects of deformation temperatures on the superplastic behavior, microstructure evolution, and failure mechanisms of Ni-Co-based superalloy were analyzed. The superplastic-tensile temperatures have significant effects on flow behavior, which shows distinctive features of dynamic recrystallization (DRX). The alloy exhibits a striking increase in elongation with increasing the superplastic-tensile temperature to 1100 degrees C, reaching 1760 %.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Guangxian Lu, Yunsong Zhao, Junbo Zhao, Yanhui Chen, Haibo Long, Xianghui Li, Dingzhong Tang, Zhixun Wen, Xiaodong Han
Summary: This study investigates the hydrogen embrittlement behavior and fracture mechanism of a second-generation nickel-based single crystal superalloy under electrochemical hydrogen pre-charge. The superalloy showed high susceptibility to hydrogen embrittlement, resulting in reduced strength and ductility. It was found that hydrogen decreased the cohesive strength between phases and accelerated crack propagation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Min Ling, Zi-Sheng Zhang, Yi-Long Liang, Yuan-Biao Tan
Summary: The hot deformation behavior of GH4169 alloy in homogeneous and mixed-crystal states was investigated. The results showed that the peak stress of the homogeneous alloy was lower than that of the mixed-crystal alloy at the same temperature and strain rate. Microstructural analysis revealed that the differences were caused by different initial grain sizes and dynamic recrystallization mechanisms.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Optics
Jiangdong Cao, Xueyu Cao, Bochen Jiang, Fang Yuan, Da Yao, Jian Huang
Summary: The study found that high power laser shock processing induced microstructural evolution in the Ni-based superalloy GH202, including dislocation slip and twinning. LSP also promoted dynamic recrystallization and the formation of dislocation arrays and subgrains within 250 microns in depth. Beyond 200 microns, the dislocation density significantly decreased.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Qingqing Ding, Hongbin Bei, Xia Yao, Xinbao Zhao, Xiao Wei, Jin Wang, Ze Zhang
Summary: Tensile testing at various temperatures has revealed the deformation mechanisms of a Ni-based single crystal superalloy. The deformation mode of the alloy strongly depends on temperature, with competitive responses of the gamma and gamma' phases under mechanical loading playing a critical role. Deformation substructures and mechanisms have been systematically revealed from micrometer to atomic scales, providing comprehensive understanding and mechanistic guidelines for designing new/next generation superalloys.
APPLIED MATERIALS TODAY
(2021)
Article
Engineering, Manufacturing
Chang-Yong Yang, Zhi Wang, Hao Su, Yu-Can Fu, Nian-Hui Zhang, Wen-Feng Ding
Summary: Honing is an important technology for machining onboard system parts to improve finishing accuracy and surface quality. This study developed a numerical simulation model using Python to analyze the honing process. The model considered parameters such as oilstone shape, workpiece surface morphology, and motion trajectory to predict honed surface roughness and morphology. The model was validated through experimental results and used to analyze the effects of various honing process parameters on workpiece surface roughness.
ADVANCES IN MANUFACTURING
(2023)
Article
Nanoscience & Nanotechnology
Shengyu Zhou, Minghao Hu, Chong Li, Qianying Guo, Liming Yu, Haimin Ding, Yongchang Liu
Summary: The correlation between microstructure-properties in a Ni-based superalloy and the coprecipitation of gamma'/gamma'' phases has been extensively studied. Experimental results show that a high amount of compact gamma'/gamma'' phases contributes to the tensile strength of the alloy, which decreases with the coarsening of the gamma'/gamma'' structures. The gamma'/gamma'' phases can hinder the motion of dislocations, and their size influences the deformation mechanisms.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
X. P. Tao, X. G. Wang, Y. Z. Zhou, K. J. Tan, J. J. Liang, Y. H. Yang, J. L. Liu, J. D. Liu, J. G. Li, X. F. Sun
Summary: The study evaluated the impact of a Pt-Al bond coat on the creep behaviours of a second-generation Ni-based single crystal superalloy at different temperature and pressure conditions. Results showed that the creep behaviours of the coated superalloy were inferior to the bare superalloy to some extent, with maximum deterioration observed at specific testing conditions. Deconvolution calculations suggested significant differences in creep stress between core superalloys and bond coat under minimum creep rate, while TEM analyses revealed changes in the dislocation structures at different conditions. Overall, the fracture mechanism shifted with increasing temperature and the degradation at certain conditions was attributed to specific factors within the inter-diffusion zone and phases in the superalloy near the bond coat.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Zhao Guang-Di, Liu Fang, Zang Xi-Min, Sun Wen-Ru
Summary: The addition of boron significantly affects the microstructure and hot ductility of superalloy U720Li, increasing the content of eutectic and impacting the continuity of grain boundary precipitation. Boron worsens the tensile ductility at 1100 degrees C and changes the fracture mode, mainly by promoting the continuous precipitation of eutectic along the grain boundary.
Article
Materials Science, Multidisciplinary
Fei Liang, Zhe-Xuan Wang, Yan-Wen Luo, Bin Zhang, Xue-Mei Luo, Guang-Ping Zhang
Summary: The tensile properties and plastic deformation behavior of Ni/Ni-W laminated composites were investigated with different thickness ratios of the Ni layer to the Ni-W layer. Increasing the thickness ratio improved the strength/ductility synergy due to enhanced co-deformation ability of nanograined Ni-W layers. Thinning of Ni-W layers with small original thickness was achieved through stable grain boundary sliding under interface constraint, leading to a transition in fracture behavior as the Ni-W layer thickness decreased.
Article
Nanoscience & Nanotechnology
Kartik Prasad, Yuuki Horita, Atsushi Ito, Shiro Torizuka
Summary: The study revealed that the Ni base superalloy manufactured additively had a relatively higher dislocation density and a higher proportion of screw dislocations during plastic deformation compared to the wrought counterpart. Heat treatment is suggested for the as-built parts to improve efficiency.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Xiao-Min Chen, Liao-Yuan Nie, Hong-Wei Hu, Y. C. Lin, Jian Zhang, Xiao-Jie Zhou, Xian-zheng Lu, Jian Chen, Yan-Xing Liu
Summary: This study investigates the hot tensile behavior of a typical Ni-based superalloy using a microcomputer-controlled electronic universal testing machine at different deformation temperatures and strain rates. The results show that the tensile stress rises rapidly to a peak level, then continuously declines until final rupture. Micro-void coalescence is identified as the primary failure mechanism, with numerous dimples and tenacity nests observed on the fracture surface. Additionally, the study establishes and validates an Arrhenius-type constitutive model and an artificial neural network combined with particle swarm optimization algorithms, with the latter achieving higher prediction accuracy and correlation coefficient.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Y. Kalchev, R. Zehl, T. Piotrowiak, A. Kostka, D. Naujoks, J. Pfetzing-Micklich, A. Ludwig
Summary: The microstructure and local micromechanical properties of a Ni-based superalloy thin film produced by magnetron sputtering were investigated. The thin film consisted of columnar nanograins with mostly <111> orientation and fine nanotwins inside the nanograins. The mechanical characteristics were evaluated through micropillar compression tests, with the thin film exhibiting high microhardness and Young's modulus.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Yi-Guang Zhao, Zhi-Chao Huang, Yu-Qiang Jiang
Summary: This study investigates the low-velocity impact behaviors of DP590/AA6061 self-piercing riveting joints at different impact energies and evaluates the mechanical property evolution of the joints after impact. The results indicate that the absorbed impact energies of the joints reach the critical value at 30 J, exceeding which leads to crack failures in the sheets and decreased interlocking performance. The low-velocity impacts significantly reduce the mechanical interlocking properties of the joints and make them more sensitive to cyclic loadings.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Chemistry, Physical
Ze-Jie Zhou, Zhi-Chao Huang, Yu-Qiang Jiang, Nan-Lin Tang
Summary: This study investigates the effects of rivet height and laying order of metal sheets on the joining quality in self-piercing riveting experiments of aluminum alloy and high-strength steel sheets. The results show that AA5052 alloy and SPFC440 steel can be effectively joined by self-piercing riveting, with good contact between rivet head and sheet surfaces. The joints exhibit better static tensile properties and fatigue strength under specific conditions.
Article
Materials Science, Multidisciplinary
Zhi-Chao Huang, Ze-Jie Zhou, Yu-Qiang Jiang
Summary: This study combines shot peening process with self-piercing riveting process to improve the performance of self-piercing riveting joints. Shot peening can induce residual compressive stress in aluminum sheets, resulting in improved static and fatigue strength of the joints. The main fatigue failure type is the damage of the lower sheets at the contact zones with the rivet leg. The shot peening process effectively enhances the self-piercing riveting joint performance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Zhi-Chao Huang, Yu-Kuan Zhang, Yong-Cheng Lin, Yu-Qiang Jiang
Summary: This paper investigates the self-piercing riveting forming qualities and joint strengths of foam iron-nickel/copper sandwich composite aluminum plates with AA5052 aluminum alloys. The study finds that foam metal sandwich composite aluminum plates can increase interlock width and improve self-locking performance of joints. Furthermore, the bottom thicknesses are significantly increased when the foam metal sandwich composite aluminum plates are riveted as bottom plates.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Guanqiang Wang, Mingsong Chen, Yongcheng Lin, Hongbin Li, Yuqiang Jiang, Yanyong Ma, Chengxu Peng, Jinliang Cai, Quan Chen
Summary: This research aims to clarify the connections between recrystallization and the delta (8) phase (Ni3Nb) during annealing in Ni-based alloys. The results show that the microstructure and component of the 8 phase dominate the recrystallization nucleation in the alloy.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Zhi-Chao Huang, Ying-Lian Jia, Yu-Qiang Jiang, Yong -Chao Zhang
Summary: Automotive light-weighting is an important trend in the automotive industry, and the joining of light-weighting materials is crucial. This study investigated self-piercing riveting (SPR) and SPR-bonded (SPR-A) joints of AA6061 and DP590 sheets, and evaluated their mechanical properties after exposure to salt spray environments for different aging times. The results showed that the shear and fatigue properties of the joints decreased with longer salt spray exposure. The SPR-A joints exhibited higher failure loads and energy absorption values compared to the SPR joints under the same salt spray time. Fatigue failure was mainly attributed to fretting wear between the rivet-foot and the lower sheet, and the salt spray time had no significant effect on the fatigue failure modes of both joint types.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Zhi-Chao Huang, Guo-Huang Huang, Feng-Wu Shan, Yu-Qiang Jiang, Yun-Qi Zou, Xiao-Yong Nie
Summary: Flow drill screwing (FDS) is an optimal process for single-side connection of metal sheets. However, the plastic deformation and high temperature during the connection process can greatly affect the mechanical properties and microstructure of the metal sheets. In this study, AA6061-T6 sheet was connected using the FDS process, and the forming quality and microstructure evolution of the alloy were investigated. The results showed that the plate and the screw were mechanically connected, with obvious plastic deformation and recrystallization occurring in the aluminum alloy around the screw. This resulted in the formation of a fine-grained zone near the joint interface. The high temperature in the connection process partially promoted the dissolution of the strengthening phase, leading to a decreased strength of the alloy matrix near the screw.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
YiBo Xiong, DongXu Wen, ZhiZhen Zheng, ChaoYuan Sun, Jing Xie, JianJun Li
Summary: This study investigates the effects of heat treatment on microstructure evolution and mechanical properties of directed energy deposition-Arc (DED-Arc) 300M steel. The results show that increasing the austenitizing temperature transforms the original columnar grains into equiaxed grains. The spherical cementite and rod-shaped epsilon-carbides in the as-deposited microstructure are completely dissolved above 970 degrees C, increasing the carbon supersaturation in the martensite and facilitating the dispersion of fine epsilon-carbides. The anisotropy of tensile properties caused by the DED-Arc process is significantly reduced with higher austenitizing temperature. A heat treatment procedure is proposed for DED-Arc 300M steel, resulting in improved microhardness and excellent tensile properties.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
PeiZhi Yan, DongXu Wen, Yang Liu, Liang Huang, XiaoLi Yang, ZhiCheng Zhang, FuZe Xu, JianJun Li
Summary: The evolution of microstructure and 8 phase (Ni3Nb) in a nickel-based superalloy was studied using hot compression tests. The effects of deformation parameters on dynamic recrystallization (DRX), fracture behaviors, and dissolution mechanisms of 8 phase were characterized and discussed. The results showed that the fraction of DRX increased with increasing strain or decreasing strain rate, and two mechanisms were identified for the promoting effect of DRX on the fracture behaviors of 8 phase. Additionally, the distribution of Nb element tended to be uniform with further straining due to the diffusion channels provided by dislocations around the phase boundary.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
YiBo Xiong, DongXu Wen, ZhiZhen Zheng, ChaoYuan Sun, Jing Xie, JianJun Li
Summary: The combination of wire arc additive manufacturing (WAAM) technology with traditional manufacturing process provides a promising method for fabricating large and complex parts. A comparative study of flow behaviors and microstructure evolution of wrought and WAAMed ultrahigh-strength (UHS) steels was conducted to acquire the optimal hybrid manufacturing process. The results showed that the WAAMed UHS steel has higher flow stress and slower dynamic recrystallization kinetics compared to the wrought UHS steel, due to its coarse prior austenite columnar grains and carbides in the initial microstructure.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Yong-Chao Zhang, Zhi-Chao Huang, Yu-Qiang Jiang, Ying-Lian Jia
Summary: Self-piercing riveting (SPR) is a technology that is widely used in the automotive industry for joining various materials. This study analyzed the effects of forming parameters on the qualities and properties of SPR joints made of B1500HS steel and AA5052 aluminum alloy. The results showed that the stack sequence of the sheets had minimal influence on the peak tensile load and rigidity of the joints. Joints with the steel sheet placed on the aluminum sheet exhibited better mechanical stability and increased fatigue life compared to joints with the opposite sequence.
Article
Materials Science, Multidisciplinary
Jia-Fu Wu, Yu-Qiang Jiang, Wei Deng, Gu-Wen Yao
Summary: Hastelloy C276 is widely used in new generation nuclear power plants for optimum formation through hot deformation. The research on hot deformation and constitutive modeling of Hastelloy C276 alloy establishes processing maps. The results show that strain rate and temperature significantly affect the deformation behaviors of Hastelloy C276 alloy.The yield behavior and flow stress are predicted using the Arrhenius constitutive equation, with correlation coefficients of 0.9613 and 0.9837 indicating high predictive capability. Increasing the deformation temperature reduces unstable deformation area, allowing the alloy to deform at low strain rates. However, high strain rates cause flow localization unsuitable for hot deformation.
MATERIALS RESEARCH EXPRESS
(2023)
Article
Materials Science, Multidisciplinary
Zhi-Chao Huang, Dao-Chun Lu, Yong-Chao Zhang, Yu-Qiang Jiang, Yan Lu, Yan-Wei Guo
Summary: In this study, TC4 titanium alloy was solution heat treated and its joint performance was evaluated through riveting and tensile tests. The results showed that solution heat treatment significantly improved the elongation, mechanical properties, and hardness of TC4 titanium alloy. The highest tensile strength was achieved at a solution temperature of 930°C. The failure morphology of TC4 titanium alloy varied under different solution heat treatment temperatures.
MATERIALS RESEARCH EXPRESS
(2023)
Article
Materials Science, Multidisciplinary
Zhi-Chao Huang, Nan -Lin Tang, Yu-Qiang Jiang, Qi Zhang
Summary: Foam metal composite plates, specifically nickel foam, are widely used in lightweight car design. This paper investigates the connection between nickel foam composite plates and AA5052 aluminum alloy using self-piercing riveting. The impacts of different energies and times on the joints were studied, with a focus on mechanical properties and failure forms.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Mechanics
Zhi-Chao Huang, Hai-Zhou Li, Yu-Qiang Jiang
Summary: In this study, the dynamic loading response and impact damage mechanism of carbon fiber reinforced polymer (CFRP) laminates and AA6061-T651 self-piercing riveting joints were investigated through drop weight tests. It was found that the low-velocity impact position had a significant influence on the strength of the joints. Two impact damage mechanisms were identified, with CFRP laminates undergoing internal damage below 10 J impact energy and aluminum alloy experiencing plastic deformation above 10 J. The composite damage played a leading role in absorbing the impact energy.
COMPOSITE STRUCTURES
(2023)
