请问一下懂金属构造的明白人

我在wikipidia里找到的：
Alloying small quantities of tungsten with steel greatly increases its toughness. 合金中少量的钨极大的增强了钢的韧性。
The hardness and density of tungsten are applied in obtaining heavy metal alloys. A good example is high speed steel, which may contain as much as 18% tungsten. 钨的强度和密度使得它被广泛应用于重金属合金。例如：高速钢，它大约含有 18%的钨。

关于钒：
Approximately 80% of vanadium produced is used as ferrovanadium or as a steel additive.约80%的钒用于生产钒铁或作为合金钢的组成部分。
o specialty stainless steel, e.g. for use in surgical instruments and tools. 钒是不锈钢的成分之一，用于手术设备。
o rust resistant and high speed tool steels. 用于不锈钢和高速工具钢
o Vanadium steel alloys are used in axles, crankshafts, gears, and other critical components. 钒钢合金广泛应用于轴、齿轮和其它关键部件。
* It is an important carbide stabilizer in making steels.它是炼钢生产中重要的碳化物稳定剂。

嗯，没错，是钒，至于作用的吧，你看百度百科吧，我复制过来也没什么意思，如果想更进一步了解作用机理的话，建议你买本金属材料学看看