Advanced search
Publication Cover
Science and Technology of Welding and Joining Volume 20, 2015 - Issue 2
Journal homepage
289
Views
19
CrossRef citations to date
0
Altmetric
Research Papers

Novel postweld heat treatment method for improving mechanical properties of resistance spot weld

R. DuanSchool of Materials Science and Engineering, Tianjin University, Tianjin300072, China;Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin300072, China
,
Z. LuoSchool of Materials Science and Engineering, Tianjin University, Tianjin300072, China;Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin300072, ChinaCorrespondence[email protected]
,
Y. LiSchool of Materials Science and Engineering, Tianjin University, Tianjin300072, China;Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin300072, China
,
Y. ZhangSchool of Materials Science and Engineering, Tianjin University, Tianjin300072, China;Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin300072, China
&
Z. M. LiuSchool of Materials Science and Engineering, Tianjin University, Tianjin300072, China;Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin300072, China
Pages 100-105 | Received 18 Sep 2014, Accepted 04 Nov 2014, Published online: 18 Nov 2014
 
Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days

Abstract

A novel postweld heat treatment method by applying cross-direction welding current (cross-current) was applied on the resistance spot weld. The effect of cross-current on the nugget shape, microstructure and mechanical properties was investigated. The results show that the cross-current postweld heat treatment enhances the efficiency of postweld heat treatment and improves the mechanical performance of nugget. The cross-current promotes the recrystallisation of nugget microstructure, which induced the transformation of microstructure from column crystal to quasi equiaxed grain. The quasiequiaxed grains of martensite in the weld nugget significantly increase the microhardness of weld nugget and the tensile shear force of weld joint.

Acknowledgement

This research is supported by the National Nature Science Foundation of China (Grant Nos. 51405334 and 51275342).

Log in via your institution

Access through your institution

Log in to Taylor & Francis Online

Restore content access

Restore content access for purchases made as guest
There are no offers available at the current time.

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.