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对经550~950℃时效处理后的00Cr25Ni35AlTi合金M23C6相的析出行为进行了研究。结果表明,在本温度范围内时效处理,合金组织中M23C6相主要在晶界、孪晶端部析出,并与晶界一侧的基体保持共格关系,共格孪晶界、晶粒内部没有发现M23C6。在550~850℃范围随着温度的升高,M23C6的数量增加并发生长大,形貌由细柱状向薄片状、大颗粒状转变。在850~950℃范围M23C6开始溶解,数量减少。
The precipitation behavior of M23C6 phase of 00Cr25Ni35AlTi alloy after aging at 550-950 ℃ was studied. The results show that M23C6 phase mainly precipitates at the grain boundaries and twin ends and coherently forms with the matrix on one side of the grain boundaries in the temperature range of aging treatment. Found M23C6. In the temperature range of 550 ~ 850 ℃, the amount of M23C6 increased and grew up with the increase of temperature, and the morphology changed from fine columnar to flaky and large granular. In the range of 850 ~ 950 ℃ M23C6 began to dissolve, the number decreased.