【摘要】 研究了不同热处理制度对MX246A合金显微组织和持久性能的影响。试验结果表明,在1 210℃,保温4 h条件下,能得到理想的微观组织和较好的高温持久性能。在一定温度范围内,高的热处理温度导致好的持久性能,分析认为这是由于较高的热处理温度使得合金的强化相(γ相)更加充分的析出。更多还原

【Abstract】 The effects of different heat-treatment on microstructure and stress rupture of MX246A have been studied in the present investigation.The experimental results showed that the optimum high temperature stress rupture properties of the alloy was obtained under the condition of 1 210 ℃/ 4 h.To some extend,the high holding temperature leads to the optimum high temperature stress rupture,because the higher heat treatment temperature makes the strength phase(γ phase?boride phase)separate out fully.更多还原