Fracture Splitting Defects Analysis of Automotive Connecting Rod Made of Air-cooled Forging Steel 36MnVS4

被引：0
|
作者：
Zhang C. [1 ]
Wei Y. [1 ]
Fang W. [1 ]
Miao H. [2 ]
Wang Q. [2 ]
机构：
[1] School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing
[2] Qinghai Special Steel Engineering Technology Research Center, Xining Special Steel Co., Ltd., Xining
来源：
| 2018年 / Cailiao Daobaoshe/ Materials Review卷 / 32期
关键词：
Air-cooled forging steel; Failure analysis; Fracture splitting technology;
D O I：
10.11896/j.issn.1005-023X.2018.14.024
中图分类号：
学科分类号：
摘要：
The present work aims at the performance during fracture splitting process of a batch of automotive connecting rod products made of air-cooled forging steel 36MnVS4. The fracture splitting defects, including uneven fracture, unsuccessfully splitting fracture and large deformation after fracture, were analyzed by alloys composition measurement, microstructure quantitative analysis and room temperature mechanical properties determination. The results showed that excessively fine primary austenite grain, overproof ferrite content, enormous bainite, microstructure inhomogeneity, and high section shrinkage are the main causes of the above mentioned defects. The determination of the material's basic characteristics and the accurate and systematic control of microstructure and properties by thermo-mechanical control process, would be the effective solution to fracture splitting defects. © 2018, Materials Review Magazine. All right reserved.
引用
收藏
页码：2458 / 2461
页数：3
相关论文
共 10 条
  • [1] Chen Y., Ma M., Wang G., Resent progress of non-quenched and tempered steel for automotive sheet, Engineering Sciences, 16, 2, (2014)
  • [2] Gu Z., Yang S., Ku S., Et al., Fracture splitting technology of automobile engine connecting rod, The International Journal of Advanced Manufacturing Technology, 25, (2005)
  • [3] Zhang C.L., Xie L.Y., Liu G.L., Et al., Surface decarburization beha-vior and its adverse effects of air-cooled forging steel C70S6 for fracture splitting connecting rod, Metals and Materials International, 22, 5, (2016)
  • [4] Zhang C., Liu Y., Application and development of air-cooled forging steel for automotive fracture splitting connecting rod, Materials Review A: Review Papers, 31, 5, (2017)
  • [5] Shi Z., Shao C., Hui W., Et al., Fracture splitting properties of steel 36MnVS4 for connecting rod, Journal of Iron and Steel Research, 26, 4, (2014)
  • [6] Liu P., Li W., Wei Y., Et al., Development of fracture splitting connecting rod made of mid-carbon and microalloyed steel without quenching and tempering, Journal of Iron and Steel Research, 27, 1, (2015)
  • [7] Li J.R., Sun X.H., Ji Y., Et al., Effects of austenitizing temperature and cooling rate on the mechanical properties of 36MnVS4 steel for automobile engine connecting rod, Materials Science Forum, 898, (2017)
  • [8] Hui W., Shao C., Zhang Y., Et al., Influence of vanadium on fracture splitting property of medium carbon steel, Journal of Iron and Steel Research International, 23, 5, (2016)
  • [9] Cryderman R., Rickert D., Puzak K., Et al., Effects of chemical composition, heat treatment, and microstructure in splittable forged steel connecting rods, SAE International Journal of Materials and Manufacturing, 8, 3, (2015)
  • [10] Kou S., Song W., Shi Z., Fracture splitting simulation and defect analysis of 36MnVS4 connecting rod, Journal of Jilin University (Engineering and Technology Edition), 47, 3, (2017)
1