强磁场下冷却速率对Fe-1.1%C合金中“反常”组织的影响  

Effect of Cooling Rates on Abnormal Microstructure in Fe-1.1%C Alloy Under High Magnetic Field

作　　者：宫明龙[1] 刘凤芳[1] 赵骧[2] 左良[2] 

机构地区：[1]东北大学秦皇岛分校资源与材料学院,河北秦皇岛066004 [2]东北大学材料各向异性与织构教育部重点试验室,辽宁沈阳110819

出　　处：《钢铁》2013年第4期55-58,共4页Iron and Steel

基　　金：国家自然科学基金资助项目(50901015;50771026);教育部长江学者和创新团队发展计划资助项目(IRT0713)

摘　　要：研究了强磁场下冷却速率对Fe-1.1%C钢中"反常"组织形貌及性能的影响。结果表明:强磁场下"反常"组织面积分数随冷却速率的增加而减小,这是由于快速冷却时原子扩散不能充分进行所致。在相同冷却速率条件下,经强磁场处理后样品与非磁场处理样品相比,"反常"组织面积分数明显增加,样品宏观硬度值下降。The microstructure features of abnormal microstructure during transformation from austenite and the hardness of specimens heat treated at different cooling rates（1,2 and 5 ℃/min） without and with applying a magnetic field（12 T） in the Fe-1.1%C alloy were investigated.The results showed that the area percentage of abnormal microstructure in the specimen heat treated under magnetic field decreases with the cooling rate increasing.The reason is that the diffusion is limited with the cooling rate increasing.At the same cooling rate,the area percentage of abnormal microstructure in the specimen heat treated with magnetic field is more than that in the specimen heat treated without magnetic field and the hardness of the specimen heat treated with magnetic field is lower.

关 键 词：强磁场 冷却速率 Fe-1 1%C合金 “反常”组织 

分 类 号：TG156.97[金属学及工艺—热处理]