Mechanical alloying and thermal stability of Al67Ti25M8 (M=Cr, Zr, Cu)

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	Mechanical alloying and thermal stability of Al67Ti25M8 (M=Cr, Zr, Cu)
	Fan, GJ; Song, XP; Quan, MX; Hu, ZQ
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	1997-07-15
卷号	231 期号:1-2 页码:111-116
关键词	mechanical alloying thermal stability nanocrystalline
ISSN号	0921-5093
通讯作者	Fan, GJ()
英文摘要	By means of X-ray diffraction (XRD), transmission electron microscopy (TEM) and differential scanning calorimetry (DSC) measurements, the sequence of the metastable phase formation and thermal stability of the mechanically alloyed Al67Ti25M8 (M = Cr, Zr, Cu) have been studied systematically. It was found that with the addition of Cr and Zr, nanocrystalline ordered Ll(2)-Al3TiM compounds were obtained after 40 h of milling. Subsequent annealing in the differential scanning calorimeter causes a grain growth process of the nanocrystallites. With the addition of Cu, the final product was nanocrystalline disordered Al(Ti,Cu) solid solution. Two types of instability upon thermal annealing for the nanocrystalline disordered Al(Ti,Cu) solid solution were observed: an instability against the grain growth; and an instability against L1(2) chemical ordering. The grain growth and L1(2) chemical ordering seem to occur simultaneously at temperatures in the range 400-700 degrees C. Our experimental results suggest that Cr and Zr may be promising alloying additions to stabilize the L1(2) structured Al3Ti compound for further application. (C) 1997 Elsevier Science S.A.
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA LAUSANNE
WOS记录号	WOS:A1997XN04400015
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/126841]
专题	金属研究所_中国科学院金属研究所
通讯作者	Fan, GJ
作者单位	CHINESE ACAD SCI,LAB 24TH,MET RES INST,SHENYANG 110015,PEOPLES R CHINA
推荐引用方式 GB/T 7714	Fan, GJ,Song, XP,Quan, MX,et al. Mechanical alloying and thermal stability of Al67Ti25M8 (M=Cr, Zr, Cu)[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,1997,231(1-2):111-116.
APA	Fan, GJ,Song, XP,Quan, MX,&Hu, ZQ.(1997).Mechanical alloying and thermal stability of Al67Ti25M8 (M=Cr, Zr, Cu).MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,231(1-2),111-116.
MLA	Fan, GJ,et al."Mechanical alloying and thermal stability of Al67Ti25M8 (M=Cr, Zr, Cu)".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 231.1-2(1997):111-116.