晶内铁素体型微合金非调质钢的显微组织与力学性能
Microstructure and Mechanical Properties of a New Kind of Intragranular Ferrite Non-quenched and Non-tempered Microalloy Steel
摘 要
研制了一种新型的晶内铁素体型微合金非调质钢,并对研制钢进行了不同的热处理;用SEM、TEM、冲击试验机和硬度计等方法对研制钢的显微组织和力学性能进行了研究.结果表明:该钢热锻空冷后得到了大量晶内析出铁素体组织,有效地分割了原奥氏体晶粒,细化了组织(晶粒度达到7~9级),提高了钢的强度与韧性,抗拉强度为1 100 MPa,冲击韧度达到62.45 J·cm-2.
晶内铁素体
显微组织
力学性能
non-queuched and non-tempered steel
intragranular ferrite
microstructure
mechanical property
Abstract
A new kind of non-quenched and non-tempered microalloy steel was developed.Then the steel was heat treated by different processes.The microstructure and mechanical properties of the steel were studied using SEM,TEM,impacter,sclerometer and other methods.The results showed that the designed steel obtained a lot of intragranular ferrite (IGF) after hot-forging and air cooling,resulting in effective segmentation of the austenite grains and refinement of the microstructure(The grain size was grade 7-9).The strength and toughness of the steel were also erhanced with the tensile strength of 1 100 MPa and impact toughness of 62.45 J·cm-2.
中图分类号 TG161 TG142.33
所属栏目 新材料 新工艺
基金项目
收稿日期 2007/11/25
修改稿日期 2008/4/9
网络出版日期
作者单位点击查看
备注王淑华( 1960-),女,山东荣成人,副教授,硕士.
引用该论文: WANG Shu-hua,JING Hai-ou,XING Lin. Microstructure and Mechanical Properties of a New Kind of Intragranular Ferrite Non-quenched and Non-tempered Microalloy Steel[J]. Materials for mechancial engineering, 2008, 32(12): 44～46
王淑华,荆海鸥,邢琳. 晶内铁素体型微合金非调质钢的显微组织与力学性能[J]. 机械工程材料, 2008, 32(12): 44～46
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参考文献
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