摘要
本文研究了放电等离子烧结(SPS)参数对HGSF01高合金工具钢致密度、硬度的影响规律,以及烧结态HGSF01高合金工具的显微组织、抗弯强度和摩擦磨损性能。结果表明:材料的致密度随烧结温度的升高和保温时间的延长呈上升趋势,而硬度则是先升高后降低;经SPS得到的材料晶粒细小,晶粒尺寸约为5μm,碳化物颗粒细小、均匀、弥散分布在基体上;烧结态材料的抗弯强度比电渣重熔态材料提高了一倍,耐磨性比电渣重熔态材料略有提高。
In this paper, the effects of SPS parameters on density and hardness of HGSF01 high-alloy tool were studied. The microstructure, bending strength and friction and wear properties of sintered HGSF01 high-alloy tool were also investigated. The results showed that the materials＂ density had a rising trend with increasing sintering temperature and holding time, while the hardness rised at first and then decreased. The samples after SPS were characterized by a fine-grained （about 5 μm） structure with relatively small and uniform carbide particles located in the matrix. The bending strength of sintered materials was twice as high as the ESR materials＂ bending strength, while the wear resistance of SPS materials is slightly higher than that of the ESR materials.
出处
《粉末冶金工业》
CAS
北大核心
2013年第4期45-49,共5页
Powder Metallurgy Industry
关键词
高合金工具钢
放电等离子烧结
显微组织
力学性能
high-alloy tool steel spark plasma sintering microstructure mechanical properties
