改锻规格对45钢力学性能的影响  

THE INFLUENCE OF FORGING SPECIFICATION ON MECHANICAL PROPERTIES OF 45 STEEL

作　　者：王劲松 张群 Wang Jinsong;Zhang Qun(Manufacturing department of BenXi Iron&Steel Co.,Ltd.BenXi 117000,China;Product Research Institute,Bengang Steel Plates Co.,Ltd.Benxi 117000,China)

机构地区：[1]本钢板材有限公司制造部,辽宁本溪117000 [2]本钢板材股份有限公司技术研究院,辽宁本溪117000

出　　处：《冶金信息导刊》2021年第4期16-17,26,共3页Metallurgical Information Review

摘　　要：通过对本钢45钢棒材横截面组织的分析,从中心、1/4半径、1/2半径、边缘铁素体晶粒直径逐渐细小,在满足国家标准要求前提下,通过将规格为φ250 mm的45钢棒材改锻成φ70 mm,正火后的屈服强度和抗拉强度均提高30 MPa以上,力学性能得到了很大提高,钢材满足高端质量要求。Through the analysis of the cross-section structure of 45 steel bar in Benxi Iron and Steel Co.,Ltd.,the grain diameter of ferrite gradually becomes smaller from the center,1/4 radius,1/2 radius and edge.On the premise of meeting the requirements of national standards,the yield strength and tensile strength of normalized 45 steel bar are increased by more than 30 MPa and the mechanical properties are greatly improved.The steel meets the high-end quality requirements requirement.

关 键 词：显微组织 铁素体晶粒 改锻 力学性能 

分 类 号：TG1[金属学及工艺—金属学]