Effects of austenite deformation on continuous cooling transformation of the pearlite heat-resistant steel

被引：3
|
作者：
Li, Yaqiang [1 ]
He, Yang [1 ]
Liu, Jianhua [1 ]
Deng, Zhenqiang [1 ]
Qiu, Shengtao [2 ]
Zhang, Pei [3 ]
Zheng, Guiyun [3 ]
机构：
[1] Univ Sci & Technol Beijing, Inst Engn Technol, Beijing 100083, Peoples R China
[2] Cent Iron & Steel Res Inst, State Key Lab Adv Steel Proc & Prod, Beijing, Peoples R China
[3] Shandong Iron & Steel Ltd, Laiwu Branch, Laiwu, Shandong, Peoples R China
来源：
IRONMAKING & STEELMAKING | 2021年 / 48卷 / 04期
基金：
美国国家科学基金会;
关键词：
Pearlite heat-resistant steel; austenite deformation; continuous cooling transformation; microstructure; phase transformation; critical cooling rate; CCT diagram; hardness; MARTENSITE START TEMPERATURE; GRAIN-SIZE; LOW-CARBON; BAINITE TRANSFORMATION; MO; NB; MICROSTRUCTURES; KINETICS; BEHAVIOR; WEAR;
D O I：
10.1080/03019233.2020.1799699
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Continuous cooling transformation (CCT) diagrams of undeformed and 40% compressively deformed pearlite heat-resistant steels at 950 degrees C were obtained by a combined method of dilatometry and metallography. The microstructure and hardness of the steel under these two experimental conditions were compared and analysed. The effects of austenite deformation on the CCT of pearlite heat-resistant steel are discussed. The CCT diagrams show that the austenite deformation extends the ferrite and pearlite transformation fields and increases the critical cooling rates to achieve the ferrite and pearlite microstructure, which causes the CCT curve to shift to the left. However, austenite deformation suppresses the transformation of bainite and martensite. Moreover, it reduces the hardness of the tested steel at the same cooling rate and grain size of the ferrite at low cooling rates.
引用
收藏
页码：402 / 408
页数：7
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