高温疲労・クリープ重畳条件下での高温疲労き裂成長速度に及ぼす損傷効果

概要

論文の詳細を見る
The characterization for the crack growth rate and the progressive damage region around the crack tip of SUS 304 stainless steel were investigated with various holding times at the maximum stress in a trapozoidal wave in a vacuum at 680℃. From these experimental results, the crack growth rate approaches the creep crack growth rate, and the geometry of the progressive damage region around the crack tip becomes similar with the increase of stress holding time. The fracture surface shows intergranular features dominated by creep in the case of with stress holding time, but does not show without stress holding time. This is distinguished from a triangular wave with no stress holding time, where the fracture implicitly involves fatigue and creep effects.
社団法人日本機械学会の論文
1991-10-25