کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
860477 1470771 2013 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of Strain Rate on the Low Cycle Fatigue Behavior of 316L(N) Stainless Steel Weld Joints
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of Strain Rate on the Low Cycle Fatigue Behavior of 316L(N) Stainless Steel Weld Joints
چکیده انگلیسی

The aim of the present paper is to study the effect of strain rate on the low cycle fatigue (LCF) behavior of indigenously developed 316LN stainless steel weld joint (0.14 N wt. % base metal welded with 0.1 wt. % N electrodes). Fully reversed total axial strain-controlled LCF tests were conducted at 823 K using a servohydraulic machine, equipped with a resistance heating furnace. Tests were conducted in air at ±0.6% strain amplitude employing strain rates 3×10−3s−1, 3×10−4s−1 and 3×10−5s−1 to investigate the effect of strain rate in the dynamic strain aging regime (DSA). Initial brief hardening, negative strain rate stress response and lowering of fatigue life with decreasing strain rate have been correlated to DSA operating at 823 K. The LCF behaviour of weld joints are correlated to the microstructural changes during fatigue cycling in order to explain the underlying deformation mechanism and fracture behaviour.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Procedia Engineering - Volume 55, 2013, Pages 176-180