马氏体逆变与顺变黄铜季裂与锌“哭”

The Reverse and Normal Transformation of Martensite, Seasonal Crack of Brass, Cry of Zinc

叙述不锈钢的奥氏体转变为马氏体 (顺变 )和马氏体转变为奥氏体 (逆变 ) ,经热处理后 ,获得板条马氏体与适量的逆变奥氏体组合 ,力学性能优异 ,应用于葛洲坝水电站转轮的大叶片。简述黄铜在雨季发生裂纹 ,锌发生晶体孪脱时 ,出现“哭声”

The phenomena that austenite of stainlessness steel is changed into martensite (Normal transformation )and martensite is changed into austenite (Reverse transformation), the microstructure of combination of the strip shape martensite with moderate reserved austenite which was got after heating treatment has excellent property. It is used by large blade of Gezhouba hydropovver station's rotating wheel. And the phenomena was also introduced briefly that brass cracks, and when zinc crystal is peeled off twice, zinc sounds like a cry at the rain season.