固溶温度对254SMo组织及力学性能的影响

Effects of Solution Treatment Temperature on Microstructure and Mechanical Properties of 254SMo

研究了固溶处理温度对254SMo组织和力学性能的影响。结果表明:254SMo在1150℃以上固溶处理时,组织能充分固溶,力学性能较好;254SMo的析出相比较复杂,主要是σ相和χ相,对钢的性能有重要的影响;在试验温度范围内固溶处理时,晶粒正常长大,长大激活能152 kJ/mol。

The effect of solution treatment on the microstructure and mechanical properties was investigated. The results are as follows： the precipitates in 254SMo dissolves completely above 1150 ℃, and mechanical properties are better as well; the precipitates below 1150℃ is complex, mainly σ and χ phase, and affect the properties of 254SMo; grain grows normally with increasing the solution temperature in the test range. The activity energy （Q） is 152 kJ/mol.