Materials Reports  2020, Vol. 34 Issue (Z1): 444-447 |
| METALS AND METAL MATRIX COMPOSITES |
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| Characteristic and Properties Control of Air-cooled Forging Steel C70S6 forFracture Splitting Connecting Rod |
| ZHANG Chaolei1, HU Jiali1, LI Jian2, MIAO Hongsheng3, LIU Yazheng1
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1 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2 School of Mechanical Engineering, Qinghai University, Xining 810016, China;
3 Xining Special Steel Co. Ltd, Qinghai Special Steel Engineering Technology Research Center, Xining 810005, China |
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Abstract The material characteristic, structure and property control of the air-cooled forging steel C70S6 for the expanding fracture connecting rod were studied by means of metallographic analysis, hardness measurement and thermal simulated compression deformation, combined with the industrial production data collected. It mainly includes the dynamic continuous cooling transformation law and its influence, the characteristic and influence of proeutectoid ferrite, and the analysis and control of the influence factors of hardness. Results showed that the change of microstructure type and content is not significant with the change of cooling rate in the range of 0.5—20 ℃/s in the process of dynamic continuous cooling. And the main reason why some forging enterprises find that the ferrite content in the connecting rod exceeds the standard is the misjudgment of metallographic examination. And carbon equivalent and sorbitization rate are the key to control hardness.
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Published: 01 July 2020
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| Fund:This work was financially supported by the Science and Technology Project of Qinghai Province (2017-ZJ-751). |
| About author:: Chaolei Zhang received his Ph.D. degree in material processing engineering from University of Science and Technology Beijing (USTB) in January 2013. He is currently an associate professor in USTB. His research interests are control of material microstructure and pro-perties, development and application of advanced steel materials. He has published more than forty papers as the first author and correspondence author. And more than ten patents for invention were authorized. |
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1 张朝磊,刘雅政.材料导报:综述篇,2017,31(3),58.
2 Gu Z, Yang S, Ku S, et al. The International Journal of Advanced Manufacturing Technology,2005,25(9-10),883.
3 Zhang C L, Xie L Y, Liu G L, et al. Metals and Materials International,2016,22(5),836.
4 Zhang W, Fang W, Zhang C L, et al. Materials Science & Engineering Technology,2020,51(2),238.
5 张朝磊,魏旸,方文,等.材料导报:研究篇,2018,32(7),133.
6 张朝磊,巴鑫宇,樊世亮,等.第十一届中国钢铁年会.北京,2017.
7 寇淑清,宋玮峰,石舟.吉林大学学报(工学版),2017,47(3),861.
8 Hui W J, Chen S L, Zhang Y J, et al. Materials & Design,2015,66,227.
9 Kou S Q, Gao Y, Zhao Y, et al. Journal of Mechanical Science and Technology,2017,31(5),2467.
10 Zhang D, Harris S J, Mccartney D G, et al. Materials Science and Engineering A,2008,489(1-2),273.
11 中国锻压协会.汽车典型锻件生产,国防工业出版社,2019. |
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