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通过观察铬硼钨钒系铁基堆焊合金在室温和高温时的金相组织、碳化物形态、组成及分布情况，证明了堆焊层中加入铬、硼、钒、钨等元素能够形成（Ｃｒ．Ｆｅ）_７Ｃ_３、ＶＣ、ＷＣ等硬质相，提高了堆焊层的常温及高温抗磨能力。但堆焊层中的碳化物（Ｃｒ、Ｆｅ）_７Ｃ_３会随着温度的升高，有部分溶解，同时基体中析出Ｃｒ_(２３)Ｃ_６，和其它碳化物共同提高堆焊层的高温耐磨性。这正是该合金高温抗磨性比较高的主要原因。
By observing the morphology, composition and distribution of the microstructure, the carbide and the distribution of the chromium-boron-tungsten-vanadium-based iron-based welding alloys at room temperature and high temperature, it is proved that the addition of chromium, boron, vanadium and tungsten to the surfacing layer can form Cr.Fe) _7C_3, VC, WC and other hard phases, improve the surfacing layer at room temperature and high temperature anti-wear ability. However, the carbides (Cr, Fe) _7C_3 in the surfacing layer partly dissolve with the increase of temperature, while Cr_ (23) C_6 precipitates in the matrix and other carbides increase the wear resistance of surfacing layer . This is the main reason for the relatively high temperature wear resistance of the alloy.