کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7951873 | 1513699 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mechanical properties of electron beam welded dissimilar joints of TC17 and Ti60 alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
شیمی مواد
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Microstructure, hardness, tensile and high cycle fatigue (HCF) properties of the welded dissimilar joints of Ti60 and TC17 titanium alloys had been investigated in this study. A significant microstructural change was observed to occur after welding, with rod-like α and β phases in the fusion zone (FZ), equiaxed α phases, fine α laths and β phases in the heat-affected zone (HAZ) of TC17 side and acicular martensite α' phases+“ghost” α phases in the HAZ of Ti60 side. The microhardness across the joints exhibited an inhomogeneous distribution with the highest hardness of â¼404 HV in FZ and the lowest hardness of â¼304 HV in base material (BM) of Ti60. All the joints tested in tension fractured at BM of Ti60 side. Fatigue limits of the joints at 107 cycles were 425â¯MPa at room temperature and 380â¯MPa at 400â¯Â°C, respectively. Welding micropores were found to be the main source of fatigue crack initiation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Science & Technology - Volume 34, Issue 10, October 2018, Pages 1859-1866
Journal: Journal of Materials Science & Technology - Volume 34, Issue 10, October 2018, Pages 1859-1866
نویسندگان
Chao Cheng, Bingbing Yu, Zhiyong Chen, Jianrong Liu, QingjiangWang QingjiangWang,