Study on Performance of TiC Particle Reinforced Martensite Wear-resistant Steel
-
摘要: 采用模铸、连铸两种工艺工业化试制一种TiC颗粒强化型马氏体耐磨钢, 分析了TiC颗粒的析出规律, 对比研究了试验钢与传统马氏体耐磨钢的组织、力学性能及耐磨性能。试验结果表明:凝固速度越大, TiC析出相越细;轧制压缩比越大, 颗粒分布越均匀;TiC颗粒强化马氏体钢强度与传统马氏体钢相当, 韧性有所降低;微米级的TiC可以有效提高材料的磨粒磨损性能, 试验钢磨损失重仅为同等硬度传统马氏体钢的70%;耐磨性能的提高主要是因为在磨粒磨损条件下, 微米级TiC硬质点可以破碎磨砺、钝化尖角、阻断磨痕。
-
关键词:
- 颗粒强化型马氏体耐磨钢 /
- 微米级TiC /
- 耐磨性能
Abstract: TiC particle reinforced martensite wear-resistant steels with a hardness of HB450 were fabricated by mold casting and continuous casting processes.The principal of precipitation of TiC in experimental steels was studied.The microstructures and mechanical and wear-resistant properties of obtained steel were analyzed and compared with that of traditional martensite wear-resistant steels.It is found out that a higher solidification rate of continuous casting resulted in finer micron-sized TiC precipitates.In addition,a larger deformation ratio resulted in a more homogeneous distribution of TiC particles. Uniformly distributed micron-sized TiC particles could passivate the tip of the grains and stop scratches,which improved the wear resistant property of steels significantly,and reduced the weight loss to 70% compared with the traditional martensite wear resistant steels. -
点击查看大图
计量
- 文章访问数: 21
- HTML全文浏览量: 7
- PDF下载量: 1
- 被引次数: 0
下载:
