期刊论文

中文

应用激光

1000-372X

2020

40

1

22-28

10.14128/j.cnki.al.20204001.022

衡阳市科学技术发展计划项目（项目编号:2018KJ170）；

本校为第一机构

为了提高冶金关键零部件热轧地下卷取机卷筒扇形板的力学性能并延长其使用寿命, 使用激光熔覆技术在2Cr12NiMoWV钢表面分别制备了两种铁基合金熔覆层; 利用金相显微镜观察熔覆层的显微组织; 利用显微硬度计测试熔覆层的硬度; 利用万能力学试验机测试熔覆层的力学性能; 利用SEM观察拉伸断口的显微组织; 利用EDS对断口的元素种类与含量进行分析。试验结果表明: 两种铁基合金熔覆层表面光滑平整, 无裂纹、气孔等明显缺陷, 均与基体钢形成了良好的冶金结合; 熔覆层的界面组织呈现定向快速凝固特征。其中A粉末制得的激光熔覆层硬度整体高于基体, 抗拉强度1 030 MPa, 屈服强度812 MPa, 延伸率10.1%, 断...

To improve the mechanical properties of the hot rolled underground coiler reel fan-shaped plate of metallurgical key components and prolong its service life, two kinds of iron-based alloy cladding layers were prepared on the surface of 2Cr12NiMoWV steel by laser cladding technique.Observing the microstructure of the cladding layer using a metallographic microscope; testing the hardness of the cladding layer using a microhardness tester;The mechanical properties of the cladding layer were tested by a universal testing machine. The microstructure of the tensile fracture was observed by SEM. The ...