共搜索到18396条信息，每页显示10条信息，共1840页。用时：0小时0分0秒646毫秒
Numerical simulation of triaxial compression test for brittle rock sample using a modified constitutive law considering degradation and dilation behaviorTAN Xin(谭鑫)1, 2, KONIETZKY H2, FRüHWIRT T2(1... and failure process and the development of appropriate constitutive models are the basis for solving problems in rock engineering. In order to investigate progressive failure behavior in brittle rocks......
. The fatigue fracture mechanisms were analyzed by SEM. The fatigue fracture surface consists of quasi-cleavage patterns or cleavage step and a brittle fracture occurs. Numerous secondary cracks are observed; some fatigue striations exist in butt joint and its size is about 5 μm. Key words: AZ31B magnesium alloy; fatigue fracture; crack propagation; brittle fracture 1 Introduction Magnesium alloys have......
J. Cent. South Univ. (2020) 27: 752-761 DOI: https://doi.org/10.1007/s11771-020-4328-8 Phase change materials as quenching media for heat treatment of 42CrMo4 steels Milad SAKKAKI1, Farhad SADEGH... and Springer-Verlag GmbH Germany, part of Springer Nature 2020 Abstract: In the present work, paraffin phase change material is used as quenchant for the heat treatment of 42CrMo4 alloy and compared......
of ductibility is apparently due to the increase of volume fraction of the brittle phase of Mg2Ni. Fig.2 Room temperature mechanical properties of as-cast hypoeutectic Mg-Ni alloy with different Ni... Effect of eutectic phase on damping and mechanical properties of as-cast Mg-Ni hypoeutectic alloys WAN Di-qing(万迪庆), WANG Jin-cheng(王锦程), WANG Gai-fang(王改芳), LIN Lin(林 琳), FENG Zhi-gang(冯志刚......
resistance of (Pd,Ni)Sn4 phase in lead-free solder joints[J]. Journal of Alloys and Compounds, 2016, 654(2): 546-553. [10] LIU Hui-jie, FENG Ji-cai. Vacuum brazing TiAl-based alloy to 40Cr steel using Ag-Cu... on precious metals medium-low temperature brittle filler metals for electronic industry[J]. Precious Metals, 2014, 35(3): 72-73. [22] OPPERMANN H, HUTTE M, KLEIN M. Flip chip reliability of GaAs on Si......
Characterization of Cu3P phase in Sn3.0Ag0.5Cu0.5P/Cu solder jointsJian-xun Chen,Xing-ke Zhao,Xu-chen Zou,Ji-hua Huang,Hai-chun Hu,Hai-lian LuoSchool of Materials Science and Engineering,University... of Sn3.0Ag0.5Cu solder.The melting behavior of the solder alloys was determined by differential scanning calorimetry.The interfacial microstructure and phase composition of solder/Cu joints were......
coupling evaluation for progressive failure of hard brittle shale wellbore XIAO Zhiqiang1, JIA Shanpo1, 2, QI Xianyin1, 3, DAI Yonghao3, LU Fang4, JIA Lufeng1, WEN Caoxuan1 (1. Geotechnical Mechanics..., Jingzhou 434000, China) Abstract: Through the analysis of laboratory tests and field test results of physical and chemical properties, microstructure and mechanical properties of hard brittle shale......
distributed at the grain boundaries after T6 treatment. The average length, average width and aspect ratio of eutectic silicon particles after T6 condition decrease. The sizes of α(Al) primary phase... fracture nature. However, the fracture surfaces of LFC display a brittle fracture. Key words: A356; microstructure; tensile properties; fracture surface; dimple fracture; brittle fracture; expendable......
300 h, and fracture sites occur at the solder/IMC interface with a brittle fracture mode. With the increase of the aging time, the shear strength of joints keeps constant basically. However, the fracture mode changes from intercrystalline to transcrystalline brittle fracture mode. Key words: AuSn/(Ni/AlSi) joints; solid-state aging; intermetallic compound (IMC); brittle fracture 共晶AuSn合金由于具有高强度,低弹......
......
