奥氏体化温度对51CrV4钢淬火组织和性能的影响

doi:DOI：10.13228/j.boyuan.issn0449-749x.20180313

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Abstract In order to find out the optimum austenitizing temperature and the best comprehensive mechanical properties of 51CrV4 steel，the effects of austenitizing temperature on the quenching microstructure and properties of 51CrV4 steel were studied. The results show that with the increase of austenitizing temperature，the austenite grains gradually grow and the hardness increases first and then decreases，and the strength after tempering at 460 ℃ increases first and then decreases. When the austenitizing temperature is 880 ℃，the austenite grains are fine and uniform，the martensite structure is dense，the strength and hardness reach maximum. When the austenitizing temperature reaches 910 ℃，the decarburization phenomenon is obvious，and the strength，hardness and plasticity of the test steel decrease obviously. The research shows that in order to ensure uniform grain size and no decarburization under the premise of complete austenitization，the best austenitizing temperature of 51CrV4 steel for good performance is 880 ℃.

Key words： 51CrV4 steel austenitizing temperature quenching microstructure austenite grain decarburization

Received: 07 August 2018 Published: 25 April 2019

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	ZHANG Xiao-dong1
	XIA Dian-xiu1
	WANG Shou-ren1
	ZHANG Yun-shan2

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ZHANG Xiao-dong1,XIA Dian-xiu1,WANG Shou-ren1等. Effect of austenitizing temperature on quenching microstructure and properties of 51CrV4 steel[J]. Iron and Steel, 2019, 54(3): 76-81,95.

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http://www.chinamet.cn/Jweb_gt/EN/DOI：10.13228/j.boyuan.issn0449-749x.20180313 OR http://www.chinamet.cn/Jweb_gt/EN/Y2019/V54/I3/76

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