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用膨胀仪和Ｘ射线衍射仪对铬锰氮双相（Ｍ＋Ａ）不锈钢过冷奥氏体在Ｍｓ点附近的热稳定性进行了定量研究。结果表明，０Ｃｒ１３Ｍｎ８Ｎ钢在Ｍｓ点附近等温停留时出现显著的热稳定化现象，在１７０℃和１００℃等温停留所引起的奥氏体增加量最大值分别达到２０．２％和１１．１％。
The dilatometer and X-ray diffractometer were used to quantitatively study the thermal stability of the undercooled austenite of chromium-manganese-nitrogen duplex (M + A) stainless steel near the Ms point. The results show that 0Cr13Mn8N steel shows significant thermal stabilization during the isothermal residence near Ms, and the maximum increase of austenite at 170 ℃ and 100 ℃ is 20.2% and 11.1% respectively.