不同冷却方式对K465合金组织和力学性能的影响

Influence of Different Cooling Methods on Microstructure and Mechanical Properties of K465 Superalloy

研究了热处理过程中不同冷却方式对K4 6 5合金力学性能和组织的影响。表明 ,冷却方式对K4 6 5合金的组织和性能影响很大。采用大气空冷和真空控温冷却方式热处理后 ,K4 6 5合金的γ′组织都比较细小 ,性能完全满足技术条件要求。而经炉冷方式热处理后合金的γ′组织比较粗大 ,性能不理想。因此 ,对于K4 6 5合金 ,大气空冷和真空控温冷却是较好的方式 ,二者可取其一 。

Influence of different cooling methods during heat treatment on mechanical properties of K465 superalloy was studied The results show that properties and microstructure of K465 superalloy are affected obviously by the cooling methods The size of γ′ phase in specimen by air cooling or vacuum control cooling is finer than that in specimen by cooling in furnace Mechanical properties of K465 superalloy by air cooling or vacuum control cooling can meet the criterion, but that by cooling in furnace is not satisfied So air cooling and vacuum control cooling are acceptable Cooling in furnace is not acceptable