کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1576229 1514768 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Residual stresses in laser welded ASTM A387 Grade 91 steel plates
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Residual stresses in laser welded ASTM A387 Grade 91 steel plates
چکیده انگلیسی

Residual stresses in 9 mm thick ASTM A387 Grade 91 steel plates, joined using constant power (8 kW) low and high heat input laser welding processes, are characterised using neutron diffraction. The measured longitudinal and normal components of residual stress show a bimodal distribution across the welded joint with a low tensile or compressive trough at the weld centre flanked by high magnitude tensile peaks in parent metal adjacent to the heat affected zone boundaries. The width of the central trough and spread of the outboard tensile zones are significantly greater for the high heat input weld. In both cases, the stress distributions can be explained by the strains associated with the austenite to martensite solid-state transformation as the joint cools after welding.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 575, 15 July 2013, Pages 160–168
نویسندگان
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