Influence of repeated quenching-tempering on spheroidized carbide area in JIS SUJ2 bearing steel

Autor:	H Yoshida, Isamu Yoshida, Koshiro Mizobe, Katsuyuki Kida, Kohei Egawa
Rok vydání:	2018
Předmět:	Austenite Quenching Materials science Bearing (mechanical) 020502 materials Metallurgy 02 engineering and technology 021001 nanoscience & nanotechnology Steel bar Microstructure Fatigue limit Carbide law.invention 0205 materials engineering law Tempering 0210 nano-technology
Zdroj:	IOP Conference Series: Materials Science and Engineering. 307:012045
ISSN:	1757-899X 1757-8981
Popis:	High-carbon high-strength JIS-SUJ2 bearing steel is mainly used for rolling contact applications which require high fatigue strength. We had applied repeated quenching which refine the prior austenite grains to this steel. In this work, we prepared JIS SUJ2 bearing steel bar specimens which were quenched three times (Q3T1) and quenched-tempered three times (QTQTQT) in order to investigate the influence of tempering before quenching on the microstructure. The specimens were etched by picral to observe the microstructure. We found that the spheroidized carbide area was important for the prior austenite grain formation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::846a7b2e1e3f5a16842b9ff4d5f3fe0a https://doi.org/10.1088/1757-899x/307/1/012045 Zobrazit plný text záznamu