کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7980959 | 1514732 | 2014 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Friction taper plug welding for S355 steel in underwater wet conditions: Welding performance, microstructures and mechanical properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Friction taper plug welding for S355 steel in underwater wet conditions: Welding performance, microstructures and mechanical properties Friction taper plug welding for S355 steel in underwater wet conditions: Welding performance, microstructures and mechanical properties](/preview/png/7980959.png)
چکیده انگلیسی
The present work reports new results regarding developing the friction taper plug welding (FTPW) process in wet conditions for underwater welding and repairing solutions. In this study, the FTPW process, microstructures and mechanical properties of the weld are investigated. The main findings are as follows: defect-free FTP welds can be obtained with a 7000Â rpm rotational speed and an axial force of 30-50Â kN. In the heat-affected zone (HAZ) and the lower region of the weld metal (WM), a large volume of lath bainite and small amounts of acicular ferrite, polygonal ferrite, and martensite are observed. However, in the upper region of the WM, the microstructure mainly consists of lath martensite. The best results of ultimate tensile strength and V-notch impact energy are 500Â MPa and 39.5Â J, respectively, on the joint that was welded with a 45Â kN axial force. The impact failure is characterised by brittle fracture with a large area of cleavage and notably little quasi-cleavage and ductile.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 611, 12 August 2014, Pages 15-28
Journal: Materials Science and Engineering: A - Volume 611, 12 August 2014, Pages 15-28
نویسندگان
Lei Cui, Xinqi Yang, Dongpo Wang, Xiaopeng Hou, Jun Cao, Wei Xu,