合金元素钒对高碳钢丝组织与性能的影响

 钒对高碳钢丝的微观组织、力学性能及热稳定性具有显著的影响。钒元素在高碳钢中主要存在于渗碳体中，可以起到强化渗碳体的作用。添加钒元素有利于珠光体片层间距的细化，还可以增加渗碳体的热稳定性，从而抑制钢丝拉拔过程中渗碳体的分解。但在拉拔应变量较大时，富含钒的渗碳体片碎化严重，会加重钢丝在镀锌过程中的球化现象，而导致钒合金化钢丝与未添加钒元素的钢丝相比，无论镀锌与否，其扭转性能均明显下降。

Effect of Vanadium on the Microstructure and Properties of High Carbon Steel Wires

Vanadium has obvious effects on the microstructure, mechanical properties and thermo-stability of high carbon steel wire. In high carbon steel, vanadium mostly exists in cementites to reinforce them. The addition of vanadium is beneficial to the refinement of pearlite lamella spacing, and can increase the thermo-stability of cementites, so as to restrain cementite dissolution during steel wire drawing. However, fragmentation occurs to cementites with rich vanadium under a larger drawing strain, and steel wire spheroidization would aggravate during galvanizing, which, compared to non-V-alloyed steel wire, leads to the obvious decline of torsional property no matter V-alloyed steel wire is galvanized or not.