您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 12    No. 4    August 2002

[PDF Download]    [Flash Online]

    

Effects of can parameters on canned-forging process of TiAl base alloy(Ⅰ)——Microstructural analyses
LIU Yong(刘  咏),WEI Wei-feng(韦伟峰),HUANG Bai-yun(黄伯云),
 HE Shuang-zhen(何双珍),ZHOU Ke-chao(周科朝),HE Yue-hui(贺跃辉)

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

Abstract:By using thermal simulation technique, the conventional canned-forging process of TiAl based alloy was studied. The effect of can parameters on the microstructures of TiAl alloy was analyzed in this process. The results show that, the deformation microstructure of TiAl based alloy without canning is inhomogeneous. In lateral area, crack and shearing lines can be found; while in central area, fine-grained shearing zone can be found. The effect of can is to reduce the secondary tensile stress. However, only when the deformation of the steel can is coincidental with that of TiAl alloy ingot, can this effect be effective. Moreover, a thick can would enhance the microstructural homogeneity in TiAl based alloy. With the H/D ratio of the ingot increasing, the deformation of TiAl alloy would be more unsteady, therefore, a thicker can should be needed.

 

Key words: TiAl based alloy; thermal mechanical treatmen t; microstructure

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn