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对高碳铌钨合金HCNb521烧结条进行二次电子束熔炼,以控制合金的碳、锆及气体含量。分析了熔炼锭高温退火处理后的显微组织,并对比了高碳铌钨合金HCNb521及普通铌钨合金Nb521板材的力学性能。研究结果表明,碳含量的增加使铌钨合金中形成较多的第二强化相,提高了铌钨合金的强度;电子束熔炼可有效地控制铌钨合金锭坯的成分含量;高碳铌钨合金的材料力学性能较普通铌钨合金稍有提高。
High carbon niobium tungsten alloy HCNb521 sintered strip secondary electron beam melting to control the alloy of carbon, zirconium and gas content. The microstructure of the ingot after high temperature annealing treatment was analyzed. The mechanical properties of high carbon niobium alloy HCNb521 and ordinary niobium tungsten alloy Nb521 were compared. The results show that the increase of carbon content leads to the formation of more second strengthening phase in the niobium-tungsten alloy and improves the strength of the niobium-tungsten alloy. The electron beam melting can effectively control the composition of the niobium-tungsten alloy ingot. The mechanical properties of alloys than the average niobium tungsten alloy slightly increased.