| 50CrV4弹簧钢的中温二次硬化现象探讨 |
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| 引用本文： | 杨才定,华蔚,欧鹏.50CrV4弹簧钢的中温二次硬化现象探讨[J].中国材料科技与设备,2008,5(4):80-81. |
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| 作者姓名： | 杨才定 华蔚 欧鹏 |
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| 作者单位： | 宝山钢铁股份有限公司,上海201900 |
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| 摘 要： | 根据50CrV4中温回火工艺，对两种成分的50CRY4进行了不同时间的回火试验，对比试验结果和透射电镜分析，探讨了50Crv4的二次硬化现象。结果表明：中温回火时，随着时间的延长，合金中析出弥散分布的VC颗粒，起到了沉淀强化作用，并引起回火过程中的二次硬化现象。
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| 关 键 词： | 50CRY4 二次硬化 中温回火 |
An Exploration on the Mechanism of Secondary Hardening at Intermediate-Temperature in 50CrV4 Steel |
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| YANG Cai-ding,HUA Wei,OU Peng.An Exploration on the Mechanism of Secondary Hardening at Intermediate-Temperature in 50CrV4 Steel[J].Chinese Materials Science Technology & Equipment,2008,5(4):80-81. |
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| Authors: | YANG Cai-ding HUA Wei OU Peng |
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| Affiliation: | (Baoshan Iron ＆ Steel Co. , Ltd. , Shanghai, 201900, China) |
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| Abstract: | A kind of Intermediate-temperature tempering treatment is designed to increase the hardness of 50CRY4 steel.Through two comparson experiments and TEM the mechanism of the secondary hardening at intermediate-temperature in 50CrV4 steel is studied. The results show that the hardness of 50CrV4 steel increases by VC precipitation, and the secondary hardening at intermediate-temperature is caused by solution strengthening of the carbonide-formed V in microalloyed steel during the intermediate-temperature tempering. |
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| Keywords: | Microalloyed steel Intermediate-temperature tempering Secondary hardening |
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