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Materials Science and Technology Volume 30, 2014 - Issue 10
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Research Paper

Formation and evolution of shear bands in cold rolled Zr40Ti60 alloy

X. Y. WangState Key Laboratory of Metastable Materials Science and TechnologyYanshan University, Qinhuangdao066004, China;College of ScienceYanshan University, Qinhuangdao066004, China
,
R. JingState Key Laboratory of Metastable Materials Science and TechnologyYanshan University, Qinhuangdao066004, China
,
C. Y. LiuState Key Laboratory of Metastable Materials Science and TechnologyYanshan University, Qinhuangdao066004, China
,
B. ZhangState Key Laboratory of Metastable Materials Science and TechnologyYanshan University, Qinhuangdao066004, China
,
M. Z. MaState Key Laboratory of Metastable Materials Science and TechnologyYanshan University, Qinhuangdao066004, China
&
R. P. LiuState Key Laboratory of Metastable Materials Science and TechnologyYanshan University, Qinhuangdao066004, ChinaCorrespondence[email protected]
Pages 1205-1208 | Received 02 Sep 2013, Accepted 12 Oct 2013, Published online: 19 Dec 2013
 
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Abstract

The microstructure evolution and formation of shear bands in Zr40Ti60 alloy during different cold rolling processes were studied in this article. Results indicate that the width of the shear band formed in the sample increases rapidly with the increasing of the thickness reduction of the sample, and the temperature rise caused by plastic deformation played an important role in the evolution process of the shear band. The microstructure within the shear bands much finer than that in the surrounding matrix has been confirmed, and nanosized subgrains were observed at the centre of the shear band with a width of 15 μm. Hardness tests showed that the microhardness within the shear band with a width of 15 μm (537 HV) was markedly higher than that in the surrounding matrix (410 HV).

Acknowledgements

This work was supported by the NBRPC (Grant No. 2010CB731600), NSFC (Grant No. 51271161/51171163/51171160/51121061) and Science and Technology Support Program of Qinhuangdao City Science and Technology Bureau (Grant No. 201302A017).

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