کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7167131 | 1462934 | 2018 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of grain size and texture on stress corrosion cracking of friction stir processed AZ80 magnesium alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The microstructure, mechanical properties, static and electrochemical corrosion, and stress corrosion cracking (SCC) behavior of friction stir processed AZ80 magnesium alloy were investigated, and the effects of grain size and texture on the SCC were analyzed. The results showed that fine-grained (FG) and coarse-grained (CG) specimens with the average grain size of 2.7 and 7.1â¯Î¼m was obtained via friction stir processing (FSP) underwater and in air, respectively. Both specimens exhibited the similar characteristics of basal texture. The average microhardness of FG specimen (75.3â¯HV) was higher than that of CG specimen (69.4â¯HV) in the stir zone. Grain refinement enhanced both the corrosion and stress corrosion resistances in 3.5â¯wt% NaCl solution. The FG specimen exhibited obvious anisotropy in SCC susceptibility when tested along the processing and transverse directions during slow strain rate tensile test. Texture softening effect accelerated the formation of pitting corrosion, and decreased the SCC performance. Fracture surface of SCC exhibited transgranular brittle fracture. SCC behavior was controlled by anodic dissolution, and the hydrogen accelerated the SCC.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Failure Analysis - Volume 92, October 2018, Pages 392-404
Journal: Engineering Failure Analysis - Volume 92, October 2018, Pages 392-404
نویسندگان
Liying Huang, Kuaishe Wang, Wen Wang, Jie Yuan, Ke Qiao, Tao Yang, Pai Peng, Tianqi Li,