一种钢结硬质合金的碎裂机理研究

Research on the Cracking Mechanism of a Steel-bonded Carbide

用扫描电镜、X-射线衍射能谱和金相显微镜等分析方法,对以TiC为硬质相的一种钢结硬质合金,在焊接和使用过程中产生裂纹和碎片的机理进行了研究,得出了合金的组织结构为非奥氏体时,是导致碎裂的主要原因。从而为改善合金性能和改进制作工艺与技术提供了理论依据。

The article analyzes the cracking mechanism of a steel- bonded carbide containing TiC based in welding and using process by scanning electron microscope, x-ray diffraction energy and metallurgical microscope and so on. The results showed that, mail reason of cracking is due to the constitution of steel- bonded carbide is non- austenite. The research provides the scientific theory basis to improve alloy performance and manufacturing technique.