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(英文版)

Journal of Central South University

Vol. 3    No. 2    December 1996

[PDF Download]    [Flash Online]

    

EFFECTS OF MICROSTRUCTURES ON THE DEFORMATION AND FRACTURE BEHAVIORS OF TiAl-BASED ALLOYS
Chen Xiaoqun He Yuehui Liu Wensheng Qu Xuanhui Huang Baiyun

Powder Metallurgy Research Institute, Central South University of Technology, Changsha 410083, China

Abstract:The fracture toughnessKIc, the tensile deformation and fracture behaviors of different microstructures ofγ-TiAl based alloy, Ti-33Al3Cr-0.5Mo] were studied at room temperature. It is found that the KIc value is lower in the duplex microstructure, and increases with the increase of vol pct of the lamellar microstructure, and that the full lamellar has the highest KIc value. Cleavage was the dominant fracture mechanism in the duplex microstructure material. In contrast, for the full lamellar microstructure the high anisotropy of deformation and the large strain discontinuity at grain boundaries resulting in decohesion of grain boundaries are the main fracture processes.

 

Key words: microstructure; deformation; fracture; TiAl-based alloy

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