| 含氮耐蚀模具钢TM420的组织与性能 |
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| 引用本文： | 陈建礼,张晓琨,楚宝帅,张锦文.含氮耐蚀模具钢TM420的组织与性能[J].金属热处理,2021,46(5):171-174. |
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| 作者姓名： | 陈建礼 张晓琨 楚宝帅 张锦文 |
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| 作者单位： | 山西太钢不锈钢股份有限公司技术中心, 山西 太原 030003 |
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| 摘 要： | 对含氮耐蚀模具钢TM420不同热处理状态下的硬度、晶粒度、显微组织、力学性能以及耐点蚀性能进行了研究。结果表明:含氮耐蚀模具钢TM420退火后组织主要为铁素体+碳化物,一般不含δ铁素体;相比传统耐蚀模具钢,TM420钢具有更好的淬硬性,预硬态试样具有更好的强韧性和耐点蚀性能;TM420钢具有较宽的淬火及回火区间,且具有较优的回火稳定性,推荐淬火温度区间为980~1060 ℃,预硬化回火温度区间为580~650 ℃。
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| 关 键 词： | 耐蚀模具钢 淬火 回火 力学性能 耐点蚀性能 |
| 收稿时间： | 2020-10-25 |
Microstructure and properties of nitrogen-containing corrosion-resistant die steel TM420 |
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| Chen Jianli,Zhang Xiaokun,Chu Baoshuai,Zhang Jinwen.Microstructure and properties of nitrogen-containing corrosion-resistant die steel TM420[J].Heat Treatment of Metals,2021,46(5):171-174. |
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| Authors: | Chen Jianli Zhang Xiaokun Chu Baoshuai Zhang Jinwen |
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| Affiliation: | Technical Center of Shanxi Taigang Stainless Steel Co., Ltd., Taiyuan Shanxi 030003, China |
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| Abstract: | Hardness, grain size, microstructure, mechanical properties and pitting corrosion resistance of the nitrogen-containing corrosion-resistant die steel TM420 under different heat treatment conditions were studied. The results show that the microstructure of the TM420 steel after annealing is mainly ferrite+carbide, and generally does not contain δ ferrite. Compared with traditional corrosion-resistant die steel, the TM420 steel has better hardenability, and the pre-hardened specimen has better strength and toughness and pitting corrosion resistance. The TM420 steel has a wide quenching and tempering temperature range and excellent tempering stability, the recommended quenching temperature range is 980-1060 ℃, and the pre-hardening tempering temperature range is 580-650 ℃. |
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| Keywords: | corrosion-resistant die steel quenching tempering mechanical properties pitting resistance |
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