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研究了９ＳｉＣｒ钢超塑形变热处理的显微组织，分析了钢在（γ＋ｃ）二相区超塑形变的特点，提出了超塑形变的微观机制模型，并对超塑形变热处理后的力学性能进行了测试。
The microstructure of superplastic deformation heat treatment of 9SiCr steel was studied. The characteristics of superplastic deformation of steel in (γ + c) two phase region were analyzed. The microscopic mechanism model of superplastic deformation was put forward. The mechanical properties of superplastic deformation after heat treatment The test.