时效温度对17-4PH钢微观组织及力学性能的影响
Effect of aging temperature on microstructure and mechanical properties of 17-4PH steel
王佳旭 1李丽 2冀宣名2
作者信息
- 1. 中国航发中传机械有限公司,湖南 长沙 410200
- 2. 贵州大学 材料与冶金学院,贵州 贵阳 550000
- 折叠
摘要
采用光学显微镜(OM)、扫描电镜(SEM)、电子万能试验机等方法研究了不同热处理工艺对17-4PH马氏体不锈钢组织和力学性能的影响规律.实验结果表明:热处理后基体中的析出相对时效温度变化比较敏感,尺寸随时效温度升高而增大.固溶+时效处理的试样与原始样相比其硬度和抗拉强度显著提升,而塑性无明显变化.此外,1040℃固溶+470℃时效后的试样综合力学性能最好.
Abstract
In this paper,the effect of different heat treatment processes on the microstructure and mechanical properties of 17-4PH martensitic stainless steel is studied by optical microscope(OM),scanning electron microscope(SEM)and universal testing machine.The results show that the precipitated phase in the matrix is sensitive to the change of aging temperature af-ter heat treatment,and the size increases with the aging temperature.Compared with the original sample,the hardness and tensile strength of the samples treated by solution and aging are significantly improved,while the plasticity is not obviously changed.Furthermore,the sample after solution treatment at 1040℃and aging at 470℃has the best comprehensive me-chanical properties.
关键词
17-4PH钢/时效处理/微观组织/力学性能Key words
17-4PH steel/aging treatment/microstructure/mechanical properties引用本文复制引用
出版年
2024
NETL
NSTL
万方数据