Advanced   Register
IMR OpenIR  > 中国科学院金属研究所  > 期刊论文

题名: Hot Deformation Mechanism and Ring Rolling Behavior of Powder Metallurgy Ti2AlNb Intermetallics
作者: Lu, Zheng-Guan;  Wu, Jie;  Guo, Rui-Peng;  Xu, Lei;  Yang, Rui
发表日期: 2017-7-1
摘要: Powder metallurgy (PM) Ti-22Al-24Nb-0.5Mo (at.%) alloys were prepared by hot isostatic pressing. In order to study the feasibility of PM ? ring rolling combined process for preparing Ti2AlNb rings, thermal mechanical simulation tests of PM Ti2AlNb alloys were conducted and two rectangular PM rings (150 mm in height, 75 mm in thickness, 350 mm in external diameter) were rolled as a validation experiment. Experimental results show that the flow stress of Ti2AlNb alloys exhibited a significant drop at the very beginning of the deformation (true strain <0.1), and became stable with the increase in strain. Stress instability phenomenon of PM Ti2AlNb alloys was more obvious than that of wrought alloy. Flow stress fluctuation at the initial stage of deformation is related to phase transition of Ti2AlNb alloys which strongly depends on heat treatment and thermal mechanical deformation process. Processing windows during initial stage of ring rolling process is very crucial. A sound PM Ti2AlNb rectangular ring blank (height = 150 mm, thickness = 30 mm, external diameter = 750 mm) was successfully rolled in two passes by using the improved heat preservation method and optimized rolling parameters. Tensile properties of PM Ti2AlNb alloy were improved, and the porosity was reduced after ring rolling.
刊名: ACTA METALLURGICA SINICA-ENGLISH LETTERS
Appears in Collections:中国科学院金属研究所_期刊论文

Files in This Item:

There are no files associated with this item.




Recommended Citation:
Lu, Zheng-Guan,Wu, Jie,Guo, Rui-Peng,et al. Hot Deformation Mechanism And Ring Rolling Behavior Of Powder Metallurgy Ti2alnb Intermetallics[J]. Acta Metallurgica Sinica-english Letters,2017,30(7):621-629.

SCI Citaion Data:
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Lu, Zheng-Guan]'s Articles
 [Wu, Jie]'s Articles
 [Guo, Rui-Peng]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Lu, Zheng-Guan]‘s Articles
 [Wu, Jie]‘s Articles
 [Guo, Rui-Peng]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院金属研究所  -Feedback
Powered by CSpace