LOW-CYCLE FATIGUE BEHAVIOR OF ALLOY 800H AT 600-DEGREES-C - EFFECT OF GRAIN-SIZE AND GAMMA'-PRECIPITATE DISPERSION
LOW-CYCLE FATIGUE BEHAVIOR OF ALLOY 800H AT 600-DEGREES-C - EFFECT OF GRAIN-SIZE AND GAMMA'-PRECIPITATE DISPERSION
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DOI：
10.1111/j.1460-2695.1985.tb00434.x
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发表时间：
1985-01-01
影响因子：
3.7
通讯作者：
THORVALDSSON, T
中科院分区：
文献类型：
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作者：
NILSSON, JO;THORVALDSSON, T
在600℃应变控制条件下，研究了800H合金的高应变疲劳性能。将固溶热处理材料与550C和600C时效材料的行为进行了比较，发现两种时效处理都显著延长了疲劳寿命，其中550℃时效细晶材料的疲劳寿命最长。这一结果可以用剪切绕过γ颗粒时发生的部分可逆塑性流动来解释。
High strain fatigue properties of Alloy 800H have been investigated at 600°C in strain control. The behaviour of solution heat treated material was compared with that of material aged at 550 and 600°C. It was found that both aging treatments extended the fatigue life significantly, the longest fatigue life being observed for fine‐grained material aged at 550°C. The results are explicable in terms of partially reversible plastic flow occurring when the γ′ particles are by‐passed by shearing.