共搜索到9615条信息,每页显示10条信息,共962页。用时:0小时0分0秒875毫秒
modification of the amorphous powder was performed through annealing and post milling.Annealing above the crystallization temperature(Tx) not only induced nanoscale intermetallics to precipitate in the amorphous powder,but also increased Cu atomic percentage within the residual amorphous phase.Post milling induced the amorphization of the nanocrystal intermetallics and the formation of Cu9Al4 from......
......
......
powder [J]. J Nucl Mater, 2010, 396: 86-93. [3] MILLER M K, HOELZER D T, KENIK E A, RUSSELL K F. Stability of ferritic MA/ODS alloys at high temperatures [J]. Intermetallics, 2004, 13: 387-392. [4] LIU... Trans. Nonferrous Met. Soc. China 22(2012) 330-334 Bi-modal microstructure in a powder metallurgical ferritic steel LIU Feng, LIU Yong, WU Hong, FANG Jing-hua, ZHAO Da-peng, ZHANG Liu-jie, LIU Dong......
Characterization of Cu–Ti powder metallurgical materialsErdem KarakulakMetallurgical and Materials Engineering Department, Kocaeli University摘 要:Powder..., wear and bending tests. The addition of titanium to copper caused the formation of different intermetallic layers around titanium particles. The titanium content of the intermetallics decreased from......
......
Synthesis of TiB2 nanocrystalline powder by mechanical alloying TANG Wen-ming(汤文明), ZHENG Zhi-xiang(郑治祥), WU Yu-cheng(吴玉程), WANG Jian-min(王建民), L? Jun(吕 珺), LIU Jun-wu(刘君武) School of Materials...; Abstract: TiB2 nanocrystalline powder was synthesized by mechanical alloying of Ti-67B elemental powder. X-ray diffraction(XRD) and transmission electron microscopy......
) experiments were conducted to explore the dynamic mechanical behavior and deformation mechanism of powder metallurgical (PM) Ti-47Al-2Nb-2Cr-0.2W (at.%) intermetallics with near lamellar (NL) and duplex (DP... applications. Key words: TiAl intermetallics; deformation mechanism; powder metallurgy; dynamic deformation; Split Hopkinson Bar 1 Introduction Titanium aluminides are considered as promising......
......
Warm compaction powder metallurgy of Cu NGAI Tungwai Leo(倪东惠), WANG Shang-lin(王尚林), LI Yuan-yuan(李元元), ZHOU Zhao-yao(周照耀), CHEN Wei-ping(陈维平) (Guangdong Key Laboratory for Advanced Metallic... contents, different compaction pressures and temperatures in order to study the warm compaction of copper powder. Results show that too much admixed lubricant will lead to the squeeze out......