新一代马氏体耐热钢<strong>G115</strong>的研究进展

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新一代马氏体耐热钢G115的研究进展

何焕生, 余黎明, 刘晨曦, 李会军, 高秋志, 刘永长

Research Progress of a Novel Martensitic Heat-Resistant Steel G115

HE Huansheng, YU Liming, LIU Chenxi, LI Huijun, GAO Qiuzhi, LIU Yongchang

图9 不同温度下裂纹扩展速率比较^[65]

Fig.9 Comparisons of crack growth rate at different temperatures^[65] (Stress intensity factor range (ΔK) means the stress field intensity at crack tip, which is attained by $Δ K$ = Y(a / w)σ $\sqrt[]{a}$ , Y(a / w) is functions related to pattern geometry, a is the length of cracks, w is the width of specimen, σ is the creep stress)