期刊论文

Fan, X.-F.(hefanyibang@163.com)

中文

金属热处理

0254-6051

2006

31

11

29-31

10.13251/j.issn.0254-6051.2006.11.009

本校为第一且通讯机构

利用TJ-HL-T5000激光器,对QT600-3球墨铸铁进行激光相变硬化研究,测量了淬硬层深度和硬度分布,并对其金相组织进行了观察和分析.结果表明,QT600-3球墨铸铁激光淬硬层组织的表层结构致密, 硬度可达920 HV,淬硬深度约为0.5 mm,从表面沿深度方向出现包围石墨球的马氏体壳组织,对提高耐磨性有利.

The laser hardening was carried out for QT600-3 nodular cast iron using TJ-HL-T5000 laser. The hardened depth and the hardness distribution in cross-section of the hardened layer were tested and microstructure in the hardened layer was observed and analyzed. The results show that the microstructure in the hardened layer becomes compact, and the microhardness reaches 920 HV, the hardened depth is approximately 0. 5 mm. The microstructure of martensite surrounding the spheroidal graphite appears in the direct...