非调质钢36MnVS4汽车发动机连杆胀断缺陷分析

doi:10.11896/j.issn.1005-023X.2018.14.024

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Abstract 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.

Key words： fracture splitting technology air-cooled forging steel failure analysis

Published: 31 July 2018

CLC number:

TG142.1

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	Articles by authors
	ZHANG Chaolei
	WEI Yang
	FANG Wen
	MIAO Hongsheng
	WANG Qinghai

Cite this article:

ZHANG Chaolei,WEI Yang,FANG Wen, et al. Fracture Splitting Defects Analysis of Automotive Connecting Rod Made of Air-cooled Forging Steel 36MnVS4[J]. Materials Reports, 2018, 32(14): 2458-2461.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.14.024 OR http://www.mater-rep.com/EN/Y2018/V32/I14/2458

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