均匀化退火和锻造对双相耐磨钢强韧性的影响

doi:10.12068/j.issn.1005-3026.2016.04.009

东北大学学报:自然科学版 ›› 2016, Vol. 37 ›› Issue (4): 496-499.DOI: 10.12068/j.issn.1005-3026.2016.04.009

均匀化退火和锻造对双相耐磨钢强韧性的影响

刘兴刚，韩明博，王学鹏，张国志

(东北大学材料科学与工程学院，辽宁沈阳110819)

收稿日期:2015-03-02 修回日期:2015-03-02 出版日期:2016-04-15 发布日期:2016-04-05
通讯作者: 刘兴刚
作者简介:刘兴刚(1967-)，男，甘肃会宁人，东北大学副教授；张国志(1952-)，男，辽宁阜新人，东北大学教授.
基金资助:
总装备部“十二五”预研项目(2011).

Effects of Homogenizing Annealing and Forging on Strength and Toughness of Dual-Phase Wear Resistant Steels

LIU Xing-gang， HAN Ming-bo， WANG Xue-peng， ZHANG Guo-zhi

School of Materials Science & Engineering， Northeastern University， Shenyang 110819， China.

Received:2015-03-02 Revised:2015-03-02 Online:2016-04-15 Published:2016-04-05
Contact: HAN Ming-bo
About author:-
Supported by:
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摘要/Abstract

摘要： 研究了一种低合金双相耐磨钢经均匀化退火和锻造处理后的微观组织和强韧性能.结果表明:经980℃均匀化退火4，8h和1150℃锻造处理后，实验钢显微组织主要为板条状马氏体、针状贝氏体及少量残余奥氏体，锻造处理后的晶粒度最小为7.0~7.5级，均匀化退火处理后的晶粒度最大为6.5~7.0级.均匀化退火的保温时间是影响双相耐磨钢力学性能的主要因素，实验钢保温4h时的冲击韧性和延伸率值高于保温8h的值.锻造比均匀化退火更适宜于提高低合金双相耐磨钢的强韧性，优化工艺为始锻温度1150℃、终锻温度800℃、锻造比2.

关键词: 双相耐磨钢, 均匀化退火, 锻造, 强韧性, 微观组织

Abstract: The effects of homogenizing annealing and forging on the microstructure， strength and toughness of the dual-phase wear-resistant steel were investigated. The results showed that the microstructure of the steel contained mainly lath martensite， acicular bainite and a little retained austenite under 980℃ homogenizing annealing for 4 and 8hrs respectively and 1150℃ forging. The minimum grain size of the steel is No.7.0~7.5 grade after forging while the maximum grain size of the steel homogenized is No.6.5~7.0 grade. The holding time of the homogenizing annealing is the main factor that affects the mechanical properties of dual-phase wear resistant steels， and the impact toughness and elongation values of the test steels holding for 4hrs are higher than that of the test steels holding for 8hrs. Forging deformation improves the strength and toughness of dual-phase wear resistant steels more significantly than that under homogenizing annealing， and the optimized process parameters were as follow with initial forging temperature of 1150℃， final forging temperature of 800℃ and forging ratio of 2.

Key words: dual-phase wear-resistant steel, homogenizing annealing, forging, strength and toughness, microstructure

中图分类号:

TG146.2

刘兴刚，韩明博，王学鹏，张国志. 均匀化退火和锻造对双相耐磨钢强韧性的影响[J]. 东北大学学报:自然科学版, 2016, 37(4): 496-499.

LIU Xing-gang， HAN Ming-bo， WANG Xue-peng， ZHANG Guo-zhi. Effects of Homogenizing Annealing and Forging on Strength and Toughness of Dual-Phase Wear Resistant Steels[J]. Journal of Northeastern University Natural Science, 2016, 37(4): 496-499.

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均匀化退火和锻造对双相耐磨钢强韧性的影响

Effects of Homogenizing Annealing and Forging on Strength and Toughness of Dual-Phase Wear Resistant Steels

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