Phase Morphology Evolution in AISI301 Austenite Stainless Steel under Different Cooling Rates

Quenching experiments were performed at different cooling rates under non-directional solidification by differential thermal analysis, and the morphologic variation of primary phase, phase transition temperature and hardness change at the same quenching temperature were investigated. The experimenta...

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Published inJournal of Wuhan University of Technology. Materials science edition Vol. 30; no. 2; pp. 392 - 396
Main Author 白亮 麻永林 XING Shuqing LIU Chenxin ZHANG Jieyu
Format Journal Article
LanguageEnglish
Published Heidelberg Wuhan University of Technology 01.04.2015
Springer Nature B.V
Subjects
Chemistry and Materials Science
Cooling rate
Evolution
Hardness
Materials Science
Metallic Materials
Microstructure
Morphology
Phase transformations
Quenching
Quenching (cooling)
冷却速率
奥氏体不锈钢
形态学变化
淬火温度
演变
相形态
硬度变化
非定向凝固
cooling rate
morphology evolution
primary phase
non-directional solidification
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Summary:Quenching experiments were performed at different cooling rates under non-directional solidification by differential thermal analysis, and the morphologic variation of primary phase, phase transition temperature and hardness change at the same quenching temperature were investigated. The experimental results show that, with the gradual decrease of the cooling rate from 25 K/min, the morphology of ferrite starts to transform experiencing the dendrite, radial pattern, Widmanstatten-like and wire-net. Sample starts to present the Widmanstatten-like microstructure at 10 K/min which does not exist at higher or lower cooling rates, and this microstructure is detrimental to the mechanical property. Except 10 K/min, the hardness decreases with decreasing cooling rate.
Bibliography:42-1680/TB
cooling rate non-directional solidification morphology evolution primary phase
Quenching experiments were performed at different cooling rates under non-directional solidification by differential thermal analysis, and the morphologic variation of primary phase, phase transition temperature and hardness change at the same quenching temperature were investigated. The experimental results show that, with the gradual decrease of the cooling rate from 25 K/min, the morphology of ferrite starts to transform experiencing the dendrite, radial pattern, Widmanstatten-like and wire-net. Sample starts to present the Widmanstatten-like microstructure at 10 K/min which does not exist at higher or lower cooling rates, and this microstructure is detrimental to the mechanical property. Except 10 K/min, the hardness decreases with decreasing cooling rate.
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1000-2413
1993-0437
DOI:10.1007/s11595-015-1158-x