IMR OpenIR
Microstructure and mechanical behaviors of electron beam welded NiTi shape memory alloys
D. Yang; H. C. Jiang; M. J. Zhao; L. J. Rong
2014
Source PublicationMaterials & Design
ISSN0261-3069
Volume57Pages:21-25
AbstractThe vacuum electron beam welding (EBW) technique was employed to weld Ni50.8Ti49.2 shape memory alloy sheets, and the microstructure, transformation behaviors and mechanical behaviors of the welding joints were investigated systematically. The microstructure observation showed that the weld seam was composed of coarse columnar crystals at the center and relatively fine columnar crystals near the fusion line. The abnormal high intensity of B2(2 0 0) peak in XRD patterns and preferred orientation in EBSD indicated that the grains in the weld seam have grown preferentially along the < 100 > crystal orientation. Differential scanning calorimetry (DSC) curves exhibited an increase of the martensite start temperature (M-s) of the weld seam, which led to the mixed microstructure of martensite and austenite at room temperature. As a result, the ultimate tensile strength of the welding joint was 85% as high as that of the base metal at room temperature, while it could reach 93% at 223 K when both the weld seam and the base metal were in pure martensitic state. (C) 2013 Elsevier Ltd. All rights reserved.
description.department[yang, d. ; jiang, h. c. ; zhao, m. j. ; rong, l. j.] chinese acad sci, inst met res, shenyang 110016, peoples r china. ; rong, lj (reprint author), chinese acad sci, div mat special environm, inst met res, 72 wenhua rd, shenyang 110016, peoples r china. ; ljrong@imr.ac.cn
KeywordNiti Shape Memory Alloys Electron Beam Welding Martensitic Transformation Mechanical Behavior Wires
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/72594
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
D. Yang,H. C. Jiang,M. J. Zhao,et al. Microstructure and mechanical behaviors of electron beam welded NiTi shape memory alloys[J]. Materials & Design,2014,57:21-25.
APA D. Yang,H. C. Jiang,M. J. Zhao,&L. J. Rong.(2014).Microstructure and mechanical behaviors of electron beam welded NiTi shape memory alloys.Materials & Design,57,21-25.
MLA D. Yang,et al."Microstructure and mechanical behaviors of electron beam welded NiTi shape memory alloys".Materials & Design 57(2014):21-25.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[D. Yang]'s Articles
[H. C. Jiang]'s Articles
[M. J. Zhao]'s Articles
Baidu academic
Similar articles in Baidu academic
[D. Yang]'s Articles
[H. C. Jiang]'s Articles
[M. J. Zhao]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[D. Yang]'s Articles
[H. C. Jiang]'s Articles
[M. J. Zhao]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

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