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：012017
DOI：10.1088/1755-1315/186/2/012017
语种：English
出版社：IOP Publishing
摘要：9SiCr steel is a low alloy cutting tool steel and it has high tempering stability and its hardenability and maximum hardness is much higher than chrome steel. This paper mainly analyzes the effect of microstructure and hardness of the ball-annealing, low-temperature normalizing and high-temperature normalizing in different heat treatment process about 9SiCr steel. The results show that the ball annealing pearl spherical, reducing the hardness, ease of cutting. The hardness of 9SiCr steel after spheroidizing annealing is lower, and the Rockwell hardness is 15.5HRC. The lamellar pearlite is obtained by high-temperature normalizing and low-temperature normalizing, but a large amount of cementite is precipitated during the high-temperature normalizing. It was continuous mesh, the steel becomes brittle, Rockwell hardness 42HRC, and low temperature normalized Rockwell hardness 55HRC.
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