Cr含量对HRB400E钢筋组织性能的影响  

Influence of Cr content on microstructure and mechanical properties of HRB400E rebar

作　　者：王明娣 陈伯瑜 孟祥[2] 李辉[2] 陈银莉[2] 

机构地区：[1]福建省三钢(集团)有限责任公司,福建三明365000 [2]北京科技大学冶金工程研究院,北京100083

出　　处：《轧钢》2015年第2期82-84,共3页Steel Rolling

摘　　要：通过金相组织观察、硬度和拉伸试验测试,分析了Cr含量对HRB400E热轧带肋钢筋组织和力学性能的影响。实验结果表明:高Cr钢淬透层深,过渡层厚度、回火索氏体区域厚度均大于低Cr钢;高Cr钢芯部与回火区域硬度亦大于低Cr钢,且低Cr钢的过渡层不明显;控冷钢筋的力学性能与回火索氏体区的比例、钢筋芯部的组织有关。Based on the microstructure observation, hardness test and tensile test, the microstructure evolution was analyzed for HRB400E rebar containing chromium during the cooling process. The result indicates that the quenched depth, the thickness of transition area and tempered sorbite area of high Cr steel are higher than low Cr steel. The hardness of the inner and tempered area of high Cr steel is higher than low Cr steel. The transition area of low Cr steel is not clear. The mechanical properties of water quenched bar is associated with the fraction of tempered sorbite and inner microstructure.

关 键 词：HRB400E钢筋 CR含量 组织演变 回火索氏体 力学性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG335.64[金属学及工艺—金属材料]