Search

Article

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

Thermal analysis of serrated yielding in an Al-Mg alloy

Cao Peng-Tao Zhang Qing-Chuan Fu Shi-Hua Hu Qi Gao Yun

Thermal analysis of serrated yielding in an Al-Mg alloy

Cao Peng-Tao, Zhang Qing-Chuan, Fu Shi-Hua, Hu Qi, Gao Yun
PDF
Get Citation

(PLEASE TRANSLATE TO ENGLISH

BY GOOGLE TRANSLATE IF NEEDED.)

Metrics
  • Abstract views:  3869
  • PDF Downloads:  1197
  • Cited By: 0
Publishing process
  • Received Date:  29 March 2009
  • Accepted Date:  01 May 2009
  • Published Online:  15 January 2010

Thermal analysis of serrated yielding in an Al-Mg alloy

  • 1. 中国科学技术大学,中科院材料力学行为和设计重点实验室,合肥 230027

Abstract: The serrated yielding phenomenon is studied in an Al-Mg alloy during the tensile tests at ambient temperature and constant strain rate. The temperature field on the surface of the specimen changes with the increase of strain. An infrared camera is used to observe and record the temperature variations at very high time and space resolutions. According to these thermal data, the formation and propagation of the deformation bands (type A, B) are discussed and some characteristic parameters of the bands such as orientation, bandwidth, and apparent velocity are also obtained. Furthermore, the plastic deformation in the band is quantified from heat transfer equation. Both experimental and computational results show that elastic shrinkage deformation exists outside the band only during the formation of the type B band. Based on this, whether or not shrinkage deformation exists outside the band is proposed as a new standard to discriminate type A and B bands.

Catalog

    /

    返回文章
    返回