| 正火温度对USS122G超高强度不锈钢组织及性能的影响 |
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| 引用本文： | 白若昕,刘振宝,曹建春,杨哲.正火温度对USS122G超高强度不锈钢组织及性能的影响[J].金属热处理,2020,45(11):73-77. |
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| 作者姓名： | 白若昕 刘振宝 曹建春 杨哲 |
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| 作者单位： | 1.昆明理工大学 材料科学与工程学院, 云南 昆明 650093;2.钢铁研究总院 特殊钢研究所, 北京 100081;3.重庆大学 材料科学与工程学院, 重庆 400030 |
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| 摘 要： | 通过光学显微镜、电子显微镜、物理化学相分析等表征方法研究了不同正火温度对USS122G超高强度不锈钢的微观组织和硬度的影响。结果表明:随着正火温度的升高,试验钢硬度降低,残留奥氏体含量增加,第二相含量减少,原奥氏体晶粒变大。综合分析不同正火温度对钢中第二相的种类、质量分数与硬度以及晶粒大小的影响,最终确定该试验钢的最佳正火温度为1020 ℃。
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| 关 键 词： | 正火温度 硬度 第二相 显微组织 超高强度不锈钢 |
| 收稿时间： | 2020-04-24 |
Effect of normalizing temperature on microstructure and properties of USS122G ultra-high strength stainless steel |
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| Bai Ruoxin,Liu Zhenbao,Cao Jianchun,Yang Zhe.Effect of normalizing temperature on microstructure and properties of USS122G ultra-high strength stainless steel[J].Heat Treatment of Metals,2020,45(11):73-77. |
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| Authors: | Bai Ruoxin Liu Zhenbao Cao Jianchun Yang Zhe |
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| Affiliation: | 1. Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming Yunnan 650093, China;2. Institute for Special Steels, Central Iron and Steel Research Institute, Beijing 100081, China;3. School of Materials Science and Engineering, Chongqing University, Chongqing 400030, China |
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| Abstract: | Effect of normalizing temperature on the microstructure and hardness of USS122G ultra-high strength stainless steel was studied by means of optical microscope, electron scanning microscope, physicochemical phase analysis, etc. The results indicate that with the increase of normalizing temperature, the hardness and the secondary phase content decrease, while the retained austenite content and the prior austenite grain size increase. By comprehensive analysis of the relationship between the normalizing temperature with the type, mass fraction, hardness and grain size of the secondary phase in the steel, it is concluded that the optimum normalizing temperature of the tested steel is 1020 ℃. |
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| Keywords: | normalizing temperatures hardness secondary phase microstructure ultra-high strength stainless steel |
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