多向锻造工艺对Q550钢组织和性能的影响  

Effect of multiple forging process on microstructure and mechanical properties of Q550 steel

作　　者：乔硕[1] 李萍[1] 张继兵[2] 薛克敏[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,合肥230009 [2]淮南矿业集团,淮南232000

出　　处：《塑性工程学报》2013年第5期7-10,共4页Journal of Plasticity Engineering

基　　金：安徽省自然科学基金资助项目(1308085JGD02);淮南矿业集团科研项目

摘　　要：采用不同锻造工艺对Q550钢进行多向锻造工艺研究。结果表明,经过多向锻造后,Q550钢的组织得到了有效细化;经过第3种工艺处理后,试样的综合力学性能得到提高,锻造后Q550钢沿着垂直于某一面方向的抗拉强度和3个面的平均硬度分别提高了7.5%和44.4%,伸长率也有所提高;多向锻造后,室温拉伸试样的断口形貌出现大量韧窝,表现为剪切断裂为主的韧性断裂。The Q550 steel was forged under different multiple forging processes. The Q550 steel with fine microstructure was ob- tained by multiple forging. The sample can get the best mechanical properties processed by the third process with its tensile strength perpendicular to one of three faces improved by 7. 5% and the average hardness of three pieces improved by 44. 4%. A mass of dimple was observed on fractographs of the as-forged sample, and the tensile-fracture presented on the fracture surface was mainly characterized in shearing fracture.

关 键 词：Q550钢 多向锻造 组织 性能 

分 类 号：TG316.3[金属学及工艺—金属压力加工]