کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1570780 1514376 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The local strength and toughness for stationary shoulder friction stir weld on AA6061-T6 alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
The local strength and toughness for stationary shoulder friction stir weld on AA6061-T6 alloy
چکیده انگلیسی
In this study, the local microstructure, strength and toughness of different zones in AA6061-T6 stationary shoulder friction stir welds were investigated. Results indicated that, the most significant weakening for both strength and toughness is found in HAZ that close to NZ. The microstructure of NZ includes recrystallized fine grains with high density of dislocations, homogeneous constituent particles distribution and re-precipitated of G.P. zones resulting in the recovery of local strength and the improvement for both plasticity and toughness. In HAZ, the grain structure and constituent particle distribution inherit the characteristics of base metal, but β″ precipitates are dissolved and the reprecipitated β′ particles are coarsened. This results in the decrease of yield strength, tensile strength, crack initial energy and propagation energy of HAZ, especially near NZ.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 111, January 2016, Pages 114-121
نویسندگان
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