在两种不同晶界状态下研究了Fe-15Cr-25Ni合金蠕变行为。单相合金表现出典型的回复蠕变行为,而在晶界上密集析出碳化物时蠕变速度大大降低,蠕变规律也和单相合金明显不同。沿晶界析出密集排列的碳化物时,晶界附近位错密度高,亚晶细小。对两种晶界状态下的蠕变机制进行了讨论。
Creep behavior of Fe-15Cr-25Ni alloys with different grain boundaryfeatures has been investigated. The single-phase alloy exhibits typical recovery creepcharacter, and for the alloy with M_(23) C_6 precipituted at grain boundaries, the creeprate largely decreases and the creep behavior is also different from the former.Creep mechanisms for two grain boundary features have also been discussed.
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