期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：186
期号：2
页码：012016
DOI：10.1088/1755-1315/186/2/012016
语种：English
出版社：IOP Publishing
摘要：9SiCr steel belongs to low alloy steel, hardenability, maximum hardness and tempering stability is good and the price is very low. This paper mainly studies the effect of different heat treatment conditions on the microstructure and property of 9SiCr steel. The results show that 920°C normalizing + 860°C quenching + 220°C tempering, and ultimately get cryptocrystalline martensite, uniform fine-grained carbides and a small amount of retained austenite. After tempering hardness value reached 56HRC, while maintaining a high hardness of hardened steel, high strength and excellent wear resistance, and eliminate quenching stress, improve the toughness; at 920°C and 860°C normalizing, quenching, the low temperature of 180°C after tempering has been tempered martensite and martensite phases were very fine the carbide, vulnerable to erosion, a black needle under the microscope, while the residual austenite white; after the final 920°C to 860°C normalizing quenching, the tempering at 220°C, is a kind of heat treatment process of 9SiCr steel is good, which provides technical support for the manufacturing of the tool steel.
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