کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7895019 | 1509995 | 2015 | 40 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Stress corrosion cracking of a high-strength friction-stir-welded joint of an Al-Zn-Mg-Zr alloy containing 0.25Â wt.% Sc
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Stress corrosion cracking (SCC) behavior and mechanism of a friction stir welded Al-Zn-Mg-Zr alloy with 0.25Â wt.% Sc were investigated. Impurity intermetallics and primary Al3ScxZr1âx particles both crack perpendicular to tensile direction, whereas anodic dissolution only occurs around the former, initiating SCC. During cracking propagation, both anodic dissolution and hydrogen embrittlement operate. The thermo-mechanically affected zone on advancing side adjacent to weld nugget zone is most susceptible to SCC, which can be ascribed to the enrichment of impurity intermetallics, continuously distributed grain boundary precipitates and its stronger galvanic coupling with weld nugget zone from their greater microstructure and micro-chemistry differences.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 100, November 2015, Pages 57-72
Journal: Corrosion Science - Volume 100, November 2015, Pages 57-72
نویسندگان
Ying Deng, Bing Peng, Guofu Xu, Qinglin Pan, Rui Ye, Yingjun Wang, Liying Lu, Zhimin Yin,