本文通过对Q 3 4 5d钢加入微量合金元素V并进行控轧控冷试验。
This paper carries out controlled rolling and controlled cooling test by means of adding microalloy element V to Q345D steel.
结果表明，微量合金元素硼改变了裂纹扩展途径和扩展方式，从而降低了疲劳裂纹扩展速率。
Result show that the trace boron additive causes the changes in the mode of fatigue crack propagation and its route, so that crack growth rate of 40MnB is lowered.
本文采用正交设计法系统地研究了微量合金元素对18 - 8型不锈钢铸态耐蚀性能的影响。
Influences of trace alloy elements on the corrosion properties of as-cast 18-8 stainless steel have been studied in detail by orthogonal design experiments.
采用氮气雾化法制得碱锰电池用无汞锌粉，考察了各种微量合金元素的浓度对锌粉析气量的影响。
Mercury free Zinc powder for alkaline Zn MnO 2 batteries is produced by atomizing in N2. A systematical research is carried out into the gas evolution behavior of Zinc alloy powder .
黄铜粉：分10、20、30黄铜粉，可添加稀土等微量合金元素，分为用于含油轴承及金刚石制品两类。
Brass powder: three kinds of powder, type10, type20 and type30, can been offered. Rare earth element and other trace amount of alloy element can been added.
通过对D型石墨铸铁认识过程和形成条件的分析，阐述了微量合金元素对D型石墨铸铁的组织和性能的影响，对于提高铸铁的性能具有一定的指导价值。
By analyzing the forming condition of D-type graphite cast iron, the paper describes the influence of trace alloy elements on the structure and property of D-type graphite cast iron.
叙述了合金元素和微量元素在压铸铝合金、镁合金、锌和锌铝合金中的作用及近年来取得的研究进展，分析了压铸合金有待进一步研究开发的问题。
The roles of alloying and trace elements in die-casting al, Mg, Zn and Zn-Al alloy and its research progress were surveyed. The problems in further developing die-cast alloy were analyzed.
叙述了合金元素和微量元素在压铸铝合金、镁合金、锌和锌铝合金中的作用及近年来取得的研究进展，分析了压铸合金有待进一步研究开发的问题。
The roles of alloying and trace elements in die-casting al, Mg, Zn and Zn-Al alloy and its research progress were surveyed. The problems in further developing die-cast alloy were analyzed.
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