Abstract: In order to analyze the effect of carburizing process on the fatigue properties of the 18CrNiMo7-6 notched specimens, the notched specimens with stress concentration factor Kt=1.86 were carburized and then these rotating bending fatigue properties were measured. The microstructure, hardness and stress field of the specimens were characterized. The results show that carburizing heat treatment can significantly promote the surface hardness of the sample and introduce residual compressive stress. The fatigue limit of the notched samples is increased more than 100% compared with the uncarburized samples. With the increase of the depth of effective hardening layer, the fatigue limit of notched specimens increases first and then decreases. The fatigue sources of the uncarburized and carburized specimens are at the surface of notch root, and both of them are multi-source fracture. During fatigue, martensitic transformation of the retained austenite takes place on the surface of carburized specimen, and there is a critical value for its transformation.
通讯作者:
*秦盛伟,郑州大学机械与动力工程学院讲师、硕士研究生导师。2011年于东北大学材料冶金学院本科毕业,2017年于上海交通大学材料科学与工程专业博士毕业后到郑州大学工作至今。目前主要从事高强钢以及热处理等方面的研究工作。发表论文10余篇,包括Journal of Materials Research and Technology、Metallurgical and Materials Transactions A、Materials Science and Engineering A等。qinsw@zzu.edu.cn
引用本文:
秦盛伟, 邸黎寅, 王连翔, 张承昊. 渗碳工艺对18CrNiMo7-6合金钢缺口件疲劳性能的影响[J]. 材料导报, 2024, 38(2): 22100180-7.
QIN Shengwei, DI Liyin, WANG Lianxiang, ZHANG Chenghao. Effect of Carburizing on Fatigue Properties of Notched 18CrNiMo7-6 Alloy Steel. Materials Reports, 2024, 38(2): 22100180-7.
1 Peng Y, Zhang S, Liu Z, et al. Materials Science and Technology, 2020, 36(10), 1076. 2 Słowik J, Łagoda T. International Journal of Fatigue, 2011, 33(9), 1304. 3 Cameron T B, Diesburg D E, Kim C. Journal of Metals, 1983, 35(7), 37. 4 Asi O, Can A C, Pineault J, et al. Materials & Design, 2009, 30(5), 1792. 5 Yoshida A, Fujita K, Kanehara T, et al. Bulletin of JSME, 1986, 29(247), 228. 6 Farfán S, Rubio-González C, Cervantes-Hernández T, et al. International Journal of Fatigue, 2004, 26(6), 673. 7 Genel K. Surface & Coatings Technology, 2005, 194(1), 91. 8 Yang F, Chen T, Lu Y. Journal of Materials Engineering and Perfor-mance, 2019, 28(6), 3423. 9 Agarwal N, Kahn H, Avishai A, et al. Acta Materialia, 2007, 55(16), 5572. 10 Akita M, Tokaji K. Surface & Coatings Technology, 2006, 200(20-21), 6073. 11 Ohkawa C, Ohkawa I. Engineering Fracture Mechanics, 2011, 78(8), 1577. 12 中华人民共和国国家质量监督检验检疫总局. GB/T 228.1-2010. 金属材料拉伸试验第1部分:室温试验方法, 中国标准出版社, 2010. 13 中华人民共和国国家质量监督检验检疫总局. GB/T 4337-2015. 金属材料疲劳试验旋转弯曲方法, 中国标准出版社, 2015. 14 欧盟X射线衍射残余应力测定标准. EN15305-2008. 15 中华人民共和国国家质量监督检验检疫总局. GB/T 9450-2005. 钢件渗碳淬火硬化层深度的测定和校核, 中国标准出版社, 2005. 16 Qin S W, Zhang B, Zhao H H, et al. Surface Tecknology, 2020, 49(12), 6 (in Chinese). 秦盛伟, 张棒, 赵辉辉, 等. 表面技术, 2020, 49(12), 6. 17 Liu L, Qiang L, Liu X, et al. Materials Letters, 2007, 61(4-5), 1251. 18 Tan Y X, Ren L P. Acta Metallurgica Sinica, 1989, 25(5), 6(in Chinese). 谈育煦, 任立平. 金属学报, 1989, 25(5), 6. 19 Qin S, Zhang C, Zhang B, et al. Journal of Materials Research and Technology, 2022, 16, 1136. 20 Asi O,Can A C, Pineault J, et al. Materials & Design, 2009, 30(5), 1792. 21 Genel K, Demirkol M. International Journal of Fatigue, 1999, 21 (2), 207. 22 Murakami Y, Endo M. International Journal of Fatigue, 1994, 16(3), 163. 23 Voskamp A P, Österlund R, Becker P C, et al. Metal Science Journal, 2013, 7(1), 14. 24 Kula P, Dybowski K, Lipa S, et al. Metal Science & Heat Treatment, 2014, 56(7), 440. 25 Gg A, Rong L A, Kw A, et al. Scripta Materialia, 2020, 184, 12. 26 Jeddi D, Lieurade H P. Procedia Engineering, 2010, 2(1), 1927. 27 Wei L, Huang Y, Sun Z, et al. International Journal of Fatigue, 2014, 64, 42. 28 Abdollahi A, Arias I. International Journal of Fracture, 2012, 174(1), 3. 29 Zhi Y H, Wagner D, Wang Q Y, et al. Materials Science and Enginee-ring A, 2013, 559, 790. 30 Xiao N, Hui W, Zhang Y, et al. Engineering Failure Analysis, 2019, 109, 104215. 31 Pacheco J L, Krauss G. Journal of Heat Treating, 1989, 7(2), 77. 32 Ma L, Wang M Q, Shi J, et al. Materials Science & Engineering A, 2008, 498(1-2), 258. 33 Matlock D K, Alogab K A, Richards M D, et al. Materials Research, 2005, 8(4), 453. 34 Qiu W, He Z, Fan Y N, et al. International Journal of Fatigue, 2016, 83, 335.