Tensile test, fracture toughness test, and stress corrosion cracking (SCC) test were conducted in order to evaluate the effect of thermal aging on the mechanical properties and SCC crack growth rate of shielded metal arc weld (SMAW) and gas tungsten arc weld (GTAW) of type 316L stainless steel. Thermal aging at 350 oC induced a moderate increase of ultimate tensile strength in both the welds, and the value of GTAW was higher than that of SMAW. The resistance to ductile crack extension of aged welds was lowe...
英字タイトル:
CRIEPI Activities for Evaluation of Thermally Aged Stainless Steel Weld Metals

In this study, creviced bent beam (CBB) test, x-ray stress measurement, and hardness testing on a specimen made of Type 316L stainless steel with controlled plastic strain distribution were carried out in order t o clarify behavior of crack initiation and effects of plastic strain and stress distribution on SCC initiation. The following results were obtained. (1) In this SCC test, it was found that only micro cracks whose depths were smaller than 50um were observed until 200 hours and cracks whose depths w...
英字タイトル:
Evaluation of stress and plastic strain distribution on SCC initiation test piecewith surface work hardened layer