加热速率对逆转变奥氏体微观组织的影响

doi:DOI：10.13228/j.boyuan.issn0449-749x.20180477

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Abstract In order to investigate the effects of heating rate on the reverted austenite structure，the microstructures after partial or complete reversion was studied by thermal dilatometer and Electron backscatter diffraction （EBSD）. It was found that high heating rate promotes the formation of globular austenite，while low heating rate favors the formation of acicular austenite. Meanwhile，higher heating rate leads to finer austenite structures after reversion. High heating rate makes the nucleation and growth of the reverted austenite occurred at high temperatures，at which the growth of the globular austenite is substitutional alloying elements partitioning-less and grows very fast. Therefore，high heating rate enhances the formation of globular austenite.

Key words： reversion heating rate austenite morphology

Received: 05 December 2018 Published: 15 February 2019

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	Articles by authors
	ZHANG Xian-guang1
	MIYAMOTO Goro2
	FURUHARA Tadashi2

Cite this article:

ZHANG Xian-guang1,MIYAMOTO Goro2,FURUHARA Tadashi2. Effects of heating rate on microstructure of reverted austenite[J]. Iron and Steel, 2019, 54(2): 83-89.

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http://www.chinamet.cn/Jweb_gt/EN/DOI：10.13228/j.boyuan.issn0449-749x.20180477 OR http://www.chinamet.cn/Jweb_gt/EN/Y2019/V54/I2/83

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