工程科学学报2017，Vol.39Issue(10)：1540-1545,6.DOI:10.13374/j.issn2095-9389.2017.10.012;
热轧带钢氧化铁皮拉伸开裂行为
Tensile cracking behavior of oxide scale in hot-rolled steel
摘要
Abstract
The microstructure, structure, and cracking behavior of Q235- A strip iron oxide skin were studied using X-ray diffrac-tion (XRD), scanning electron microscopy (SEM), and a universal tensile testing machine. The results show that the composition of the iron oxide mainly consists of Fe3O4 , Fe2O3 , and Fe, together with small amount of FeO, the oxide layer has the same thickness all over, about 10 μm, the structure is dense, and the matrix is better connected. The tensile experiments show that with increasing strain, the increase in the number of cracks is at first slow, then fast, then slow again. When the strain reaches 0. 05% , its iron oxide skin begins to crack; the number of cracks increases with increasing strain in the range 0. 08% - 0. 10% . When the strain exceeds 0. 10% , the crack number increases slowly, and when the strain exceeds 0. 15% , the number of cracks stops grow.关键词
热轧带钢/氧化铁皮/裂纹/拉伸断裂Key words
hot-rolled steel/oxide scale/cracks/tensile cracking分类
矿业与冶金引用本文复制引用
王尚,杨荃,任云鹤,王晓晨,单忠德..热轧带钢氧化铁皮拉伸开裂行为[J].工程科学学报,2017,39(10):1540-1545,6.基金项目
国家自然科学基金资助项目(51604024) （51604024）
国家"十二五"科技支撑计划资助项目(2015BAF30B01) （2015BAF30B01）
中央高校基本科研业务费专项资金资助项目(FRF- TP- 15- 001A1) （FRF- TP- 15- 001A1）
