V-Ti增强相含量对表面改性模具性能的影响

• 作 者: 季业益 陆宝山 孙书娟 李强伟
• 机 构: 苏州工业职业技术学院精密制造工程系,江苏大学材料科学与工程学院,苏州建设交通高等职业技术学校,苏州大学工程训练中心,
• 出 处: 钢铁钒钛
• 发表日期: 2016年05期
• 关键词: V-Ti 模具 3Cr2W8V模具 表面改性 V-Ti固溶体粉末 增强相含量 耐磨损性能 热疲劳性能 增强相 熔敷粉末

在激光熔敷粉末中添加不同含量的V-Ti固溶体增强相,对3Cr2W8V模具进行了表面改性,并进行了耐磨损性能和热疲劳性能的测试与分析。结果表明,添加V-Ti固溶体增强相有利于提高表面改性模具的耐磨损性能和热疲劳性能;V-Ti固溶体增强相粉末含量优选为15%。与未添加V-Ti固溶体相比,添加15%V-Ti固溶体增强相激光熔敷粉末表面改性3Cr2W8V模具的磨损体积减小63%,热疲劳裂纹级别从7级变为2级。

In the laser cladding powder, different content of V-Ti solid solution reinforcing phase was added, the surface of 3Cr2W8V mold was modified, and the wear resistance and thermal fatigue property were tested and analyzed. The results show that the addition of V-Ti solid solution enhanced phase is beneficial to improve the wear resistance and thermal fatigue properties of the surface modified mold. The content of V-Ti solid solution enhanced phase powder is preferably 15%. Compared with the non-added V-Ti solid solution, the wear volume of the 3Cr2W8V mold surface modified with 15% V-Ti solid solution enhanced phase laser cladding powder is reduced by 63%, and the thermal fatigue crackle level is changed from 7th grade to 2th grade.