利用X射线衍射和扫描电子显微镜研究了不同热处理后9Ni钢中回转奥氏体的含量及其分布,并测定了两相区热处理(QLT)各阶段钢中的回转奥氏体含量,讨论了此过程中9Ni钢组织的演变,进而分析了该工艺对9Ni钢力学性能的影响规律及其机理.结果表明:经两相区热处理后,回转奥氏体的分布状态及稳定性对9Ni钢力学性能的影响更加显著.
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