TiC-50Nb钢结硬质合金显微组织的TEM研究  

TEM RESEARCH ON MICROSTRUCTURES OF TiC-50Nb STEEL-BONDED CEMENTED CARBIDE

作　　者：吴强[1] 胡镇华[1] 肖建中[1] 崔崑[1] 

机构地区：[1]华中理工大学,武汉430074

出　　处：《粉末冶金技术》1993年第3期202-207,共6页Powder Metallurgy Technology

摘　　要：以透射电镜为研究手段,研究了TiC-50Nb钢结硬质合金经1120℃淬火,560℃回火后的显微组织结构。结果表明,经上述处理的TiC-50Nb钢结硬质合金的显微结构,尤其是钢基体的显微结构对其宏观性能有较大的影响,钢基体中析出的碳化物是其产生二次硬化现象的主要原因。The article studied the microstructures of TiC-50Nb steel-bonded cemented carbide quenched at 1120℃ and annealed at 560℃ by means of TEM. The results showed that the microstructure of the TiC-50Nb steel-bonded cemented carbide through above mentioned treatment, especially the microstructures of their steel matrix had an important influences on the macro-properties. The carbides precipitated from steel matrix were the main causes of producing secondary hardening phenomenon.

关 键 词：钢结硬质合金 显微组织 

分 类 号：TF125.3[冶金工程—粉末冶金]