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Analysis of electron structure of γ/a2 phase boundaries in ternary TiAl intermetallics KONG Fan-tao(孔凡涛), CHEN Yu-yong(陈玉勇) School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China Received 28 July 2006; accepted 15 September 2006 Abstract: The electron structure of γ/α2 phase boundaries in lamellar colonies in Ti-47Al-2M(M=Nb, Cr, V) (mole fraction......
at 175℃ and 70MPa, as compared to that before creep test, indicating that Al2La and Al2Ca have high thermal stability. Especially Al2Ca phase largely increases the strength of the grain boundaries in AEC422, which accounts for the creep resistance improvement. Key words: creep resistance; grain boundaries sliding; intermetallic phase CLC number: TG146 Document code: A 1 INTRODUCTION......
Processing摘 要:Faceted interphase boundaries(IPBs) are commonly observed in lath-shaped precipitates in alloys consisting of simple face-centred cubic(fcc... based on the phenomenological theory of martensite crystallography.Our findings have general implications for the understanding of phase transformations and the surface relief effect at the atomic scale......
Grain-scale Stress and GND Density Distributions around Slip Traces and Phase Boundaries in a Titanium Alloy何东1,LI Qiang1,WANG Haibo1,YANG Xiawei21. School of Mechanical and Materials Engineering... around the slip traces and phase boundaries where the slip lines are blocked due to Burgers orientation relationship(OR) missing. We experimentally investigated tensile deformation on TA15 titanium alloy......
eutectic and Fe-Ce phase). The dissolved La or Ce segregated at grain boundaries. The segregation of both S and P at grain boundaries was reduced with suitable RE content. The impact toughness of the steel...Behaviors of Lanthanum and Cerium on Grain Boundaries in Carbon Manganese Clean Steel Zhu Xingyuan1,Guo Feng2,Lin Qin3 (1.Wuhan University of Technology, Wuhan 430070, China;2.Inner Mongolia......
of the Fe-Ce-P intermetallic compound,it is supposed that there is a two-dimensional interfacial phase at grain boundaries with Ce and P cosegregationwhich is similar to the structure of the Fe-Ce-P...AES Analysis of Ce and P Cosegregation at Grain Boundaries张东彬,吴承建,杨让摘 要:<正> The chemical state of grain boundary cosegregation of Ce and P in Fe-P-Ce......
phase regions The other boundaries of the phase fields in 700℃ isotermal section of the Au-Ag-Dy ternary phase diagram (0-35% Dy) were determined by the X-ray diffraction disappearing-phase method...Partial phase diagram of Au-Ag-Dy ternary system ZHANG Kang-hou(张康侯), CHEN Jiang(陈 江) (Kunming Institute of Precious Metals, Kunming 650221, China) Abstract: On the basis of Au-Ag, Au-Dy......
at grain boundaries are TiC+Ti3AlC dual phase structure. The core particle is TiC and the interfacial transition zone is Ti3AlC existing between TiC particle and α+γ matrix. Ti3AlC is in equilibrium...Effects of heat treatment on dual phase structure carbides in Ti-34Al matrix compositeWANG Hong-wei(王宏伟)1, FANG Wen-bin(房文斌)2, WEI Zun-jie(魏尊杰)1, ZENG Song-yan(曾松岩)1(1. School of Materials Science......
rectangular phases along grain boundaries in the alloy matrix. The molar ratio of Mg, Zn and Er element of the phase is approximately equal to 3:3:2 according to the analytical result of energy dispersive... Phase structure of ZK60-1Er magnesium alloy compressed at 450 ?C WANG Zhong-jun(王忠军)1, YANG Qing-xiang(杨庆祥)2, QIAO Jun(乔 军)1 1. School of Materials Science and Metallurgy, University......
Characterization of the prior particle boundaries in a powder metallurgy Ti2AlNb alloyJinhu Zhang,Jinmin Liu,Dongsheng Xu,Jie Wu,Lei Xu,Rui YangInstitute of Metal Research,Chinese Academy of Sciences... HIPping parameters on the appearance of prior particle boundary(PPB),which seriously affects the mechanical properties of the alloy.The results show that more α2 phase is the characteristics of the PPB......
