固溶温度对06Cr25Ni2奥氏体耐热钢微观组织和力学性能的影响
发布时间：2018-08-30 17:25
【摘要】：以热轧态06Cr25Ni20奥氏体耐热不锈钢为研究对象,采用光学显微镜(OM)、扫描电镜(SEM)、透射电镜(TEM),结合硬度检测和拉伸试验等手段,研究了固溶温度对该材料微观组织和力学性能的影响。结果表明,热轧态耐热奥氏体不锈钢加工硬化严重、塑韧性差;固溶处理后其强度和硬度均下降,塑韧性则明显提高;随着固溶温度的升高,晶粒的方向性消除,晶粒尺寸变小且显微组织更为均匀,晶界上分布的Cr23C6相逐渐减少且消失;热轧态和1 000℃固溶处理后的室温拉伸断口呈脆性断裂特征,而经1 050℃以上固溶处理后,室温拉伸试样断口呈韧性断裂特征。
[Abstract]:The effect of solution temperature on the microstructure and mechanical properties of hot rolled 06Cr25Ni20 austenitic stainless steel was studied by means of optical microscope, (OM), scanning electron microscope, (SEM), transmission electron microscope (TEM), hardness measurement and tensile test. The results show that the hot rolled heat-resistant austenitic stainless steel has serious working-hardening and poor ductility, the strength and hardness of the austenitic stainless steel decrease after the solution treatment, and the ductility increases obviously. With the increase of the solution temperature, the directivity of the grains is eliminated. The grain size becomes smaller, the microstructure becomes more uniform, the Cr23C6 phase distribution on the grain boundary decreases and disappears, and the tensile fracture at room temperature after hot rolling and solution treatment at 1 000 鈩，
本文编号：2213748
[Abstract]:The effect of solution temperature on the microstructure and mechanical properties of hot rolled 06Cr25Ni20 austenitic stainless steel was studied by means of optical microscope, (OM), scanning electron microscope, (SEM), transmission electron microscope (TEM), hardness measurement and tensile test. The results show that the hot rolled heat-resistant austenitic stainless steel has serious working-hardening and poor ductility, the strength and hardness of the austenitic stainless steel decrease after the solution treatment, and the ductility increases obviously. With the increase of the solution temperature, the directivity of the grains is eliminated. The grain size becomes smaller, the microstructure becomes more uniform, the Cr23C6 phase distribution on the grain boundary decreases and disappears, and the tensile fracture at room temperature after hot rolling and solution treatment at 1 000 鈩，
本文编号：2213748
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