LI Chenggong
,
YANG Wanhong
,
LUO Zhiping(Institute of Aeronautical Materials
,
Beijing 100095
,
China FROES F H
,
FREFER A) Institute of Materials and Advanced Processing
,
College of Mines
,
University of Idaho
,
Moscow. ID83843-3026. USA
金属学报(英文版)
Use of mechanically alloying for preparation of Ti-35at.%Al results in significant reduction in crystal size, so the ductility of alloy can be improved Consolidation of Mechanically alloyed γ -TiAl is difficult because of its poor workability. The present paper will discuss recent studies on consolidation behavior by using different methods, such as explosive compaction, hot isostatic pressing, and rapid omnidirectional compaction, etc.. The microstructure and property of the samples are evaluated.
关键词:
: mechanical alloying
,
null
,
null
,
null
ZHANG Jianqiang
,
WU Bingyao Southeast University
,
Nanjing
,
China WU Hiaohua
,
WANG Guiqin
,
ZHAO Jiwan Nanjing University
,
China Manuscript received 10 March 1995
金属学报(英文版)
The technique of mechanical alloying(MA) for preparing amorphous Fe-Zr-B-(Cu) alloys has been studied The structure of samples was analysed by X-ray diffractometry, electron microscopy and Mssbauer spectroscopy.The results show that Fe78Zr10B12 sample of a nearly complete amorphous phase may be prepared but in Fe91Zr7B2 sample metastable b c c phase was obtained Using the same procedure a mixture of amorphous phase and α-Fe(Zr, B) was generated in Fe85Zr7B8. Furthermore,the results of Mssbauer reveal that there are two kinds of short-range ordered phases in the sample. While adding Iat% Cu in Fe78Zr10B12 or Fe85Zr7B8 sample, it is found that the hyperfine field of amorphous phases decreases significantly.
关键词:
: mechanical alloying
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null
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null
焦洪震
,
高文莉
,
章建荣
,
都有为
材料研究学报
将Fe—M(M=C,SiO2,Al2O3)混合物在Ar中高能球磨56h后测量Mossbauer谱.结果表明,(Fe)2-(SiO2)1仍为Fe和SiO2的机械混合物;(Fe)7-(C)3已完全合金化,生成两种Fe3C;(Fe)2-(Al2O3)1则成为Fe(73%)、尖晶石型的FeAl2O4(22%)、金属Fe的团簇(5%)和Al2O3的混合物.
关键词:
机械合金化
,
Mossbauer spectroscopy
