| 回火温度对37CrMnMo钢冲击性能的影响 |
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| 引用本文： | 顿亚鹏,杨伟,刘建永,盛晓菲,杨艳艳,刘耀东.回火温度对37CrMnMo钢冲击性能的影响[J].金属热处理,2020,45(2):193-196. |
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| 作者姓名： | 顿亚鹏 杨伟 刘建永 盛晓菲 杨艳艳 刘耀东 |
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| 作者单位： | 1. 湖北汽车工业学院 材料科学与工程学院, 湖北 十堰 442002;
2. 机械科学研究总院海西福建分院有限公司, 福建 沙县 365000;
3. 长春工业大学 材料科学与工程学院, 吉林 长春 130012 |
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| 基金项目： | 湖北省教育厅科学研究项目;十堰市科学技术研究与开发重点项目;国家科技重大专项 |
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| 摘 要： | 通过冲击、拉伸试验、光学显微镜和扫描电镜,研究了钻杆接头用37CrMnMo钢在不同回火温度下的显微组织形貌及强度和冲击性能的影响的变化规律。结果表明,37CrMnMo钢经水淬后于500～640 ℃回火后得到回火索氏体,随回火温度的上升其抗拉强度与屈服强度由平缓降低变为陡降趋势。500 ℃的回火组织中碳化物呈现层片状分布,冲击吸收能量为30.94 J;600 ℃回火后碳化物呈均匀弥散分布,冲击吸收能量为117.49 J;经过640 ℃回火后,显微组织中碳化物粗化,直接导致冲击吸收能量下降。故37CrMnMo钢试样在870 ℃淬火后于不同温度回火,碳化物的形貌对其强韧性起着关键作用。
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| 关 键 词： | 37CrMnMo钢 回火温度 冲击性能 回火索氏体 碳化物 |
| 收稿时间： | 2019-09-10 |
Effect of tempering temperature on impact property of 37CrMnMo steel |
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| Dun Yapeng,Yang Wei,Liu Jianyong,Sheng Xiaofei,Yang Yanyan,Liu Yaodong.Effect of tempering temperature on impact property of 37CrMnMo steel[J].Heat Treatment of Metals,2020,45(2):193-196. |
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| Authors: | Dun Yapeng Yang Wei Liu Jianyong Sheng Xiaofei Yang Yanyan Liu Yaodong |
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| Affiliation: | 1. School of Materials Science and Engineering, Hubei University of Automotive Technology, Shiyan Hubei 442002, China;
2. HaixiFujian Institute, China Academy of Machinery Science & Technology, Co., Ltd., Shaxian Fujian 365000, China;
3. School of Materials Science and Engineering, Changchun University of Technology, Changchun Jilin 130012, China |
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| Abstract: | Microstructure,strength and impact property of 37CrMnMo steel for oil pipe joint tempered at different temperatures were studied by means of impact and tensile tests and microstructure observation. The experimental results indicate that the microstructure of the quenched 37CrMnMo steel oil pipe joint tempered at 500-640 ℃ is composed of tempered sorbite. With the increase of tempering temperature,the tensile strength and yield strength decrease from gentle to steep. Tempered at 500 ℃,the flake carbides are distributed on the original martensite boundaries,and the Charpy absorbed energy is 30. 94 J. When the tempering temperature is 600 ℃,the carbides are evenly distributed,and the Charpy absorbed energy reaches a maximum value of 117. 49 J. When the tempering temperature is 640 ℃,the carbides coarsen obviously and the Charpy absorbed energy reduces notably. Therefore,the morphology of carbides plays a key role in the strength and toughness of 37CrMnMo steel when quenched at 870 ℃ and tempered at different temperatures. |
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| Keywords: | 37CrMnMo steel tempering temperature impact property tempering sorbite carbide |
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