自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(自然科学版)

Journal of Central South University

第30卷    第2期    总第126期    1999年4月

[PDF全文下载]    [Flash在线阅读]

    

文章编号:(1999)02-59-3
冷却速度对锻造TiAl基合金组织演变的影响
唐建成;黄伯云;王健农;贺跃辉;谢鲲

(中南工业大学粉末冶金国家重点实验室,长沙,410083)

摘 要: 利用光学显微镜,研究了冷却速度对锻 造Ti 48Al 2Cr(原子数分数,%)组织演变的影响.结果表明:冷却速度主要影响锻造TiAl基合金组织演变产物的形貌,而对晶团尺寸的影响较小.锻造TiAl基合金在α相转变温度θα以上等温热处理后,采用炉冷、空冷、油冷和水冷,会依次转变为全层状组织、层状组织加魏氏体组织、块状转变组织加魏氏体组织、块状转 变组织加羽毛状组织.

 

关键字: TiAl基合金;冷却速度;组织演变

EFFECT OF COOLING RATE ON THE MICROSTRUCTURE EVOLUTION OF A FORGED TiAl BASED ALLOY
Tang Jiancheng Huang Baiyun Wang Jiannong He Yuehui Xie Kun

State Key Laboratory for Powder Metallurgy, Central South University of Technology, Changsha, 410083, China

Abstract:The effect of cooling rate on the microstructure evolution of a forged TiAl based alloy was investigated through optical microscope. The results show that cooling rate affected the morphology of the microstructure of a forged TiAl based alloy, but had little influence on the colony size. When the alloys, that were isothermally heat treated at temperatures above the alpha transus , were cooled in furnace, air, oil and water, the following products were observed respectively: fully lamellar structure, lamellar structure and widmanstatten structure, massive transformation structure and widmanstatten structure, massive transformation structure and feathery structure. 

 

Key words: TiAl based alloy; cooling rate; microstructure evolution

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号