采用热力学计算、扫描电镜观察和化学相分析等手段,对一种新型Ni-Cr-Mo高强耐蚀合金中的析出相及其析出动力学行为进行了研究.结果表明:标准热处理态下试验合金中的析出相主要为聚集分布的颗粒状μ和Mo6C相,1120℃×1 h固溶处理后,合金中的所有析出相全部回溶进入基体.将固溶态的试验合金在600 ～1050℃的温度范围内等温时效,其晶界和晶内将析出Mo6C相.随着时效温度的升高,Mo6C相的析出速度加快,在800～1050 ℃的温度区间,时效仅6 min,Mo6C相即可析出.
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