Improper forging process will also appear large grain or uneven, hardening crack phenomenon, forging cost is higher than the casting flange.
锻造工艺不当也会出现晶粒大或不均，硬化裂纹现象，锻造成本高于铸造法兰。
And the precipitation of Nb has the effect of precipitation hardening and grain refinement.
钢中铌的沉淀析出具有沉淀强化和晶粒细化的作用。
The mechanism of laser hardening is martensitic hardening and grain refining.
激光相变硬化机理主要是马氏体强化和晶粒细化。
The precipitation hardening effect and the grain refining effect of trace elements vanadium and titanium in microalloyed steels were researched on.
本文研究了微量元素钒、钛在非调质钢中的析出硬化作用和细化晶粒作用。
Using the method in Quantification Metallography, the size of grain and hardening particles, volume percentage of inclusions and hardening particles are estimated according to samples.
在解剖被检试样的基础上，运用定量金相学的分析方法，估算了被检部位的晶粒直径、夹杂物体积百分数、强化粒子直径及体积百分数。
The results showed that as the content of Ti increasing , fine precipitates distribute dipersely, grain fine and age - hardening enhanced in the steel, so tensile strength in this steel is improved.
研究发现，钛含量增加，使钢中获得细小沉淀物的弥散分布，细化晶粒，增强时效硬化，从而提高该钢的抗拉强度。
The reason for abrasive wear resistance enhancement of bionics smooth surface made by Laser Carving Technology is grain super-refining strengthening, hardening, effect of dowel pin and bionics.
激光雕刻仿生非光滑表面耐磨性提高的原因是：晶粒超细化，硬度提高，桩钉效应和仿生效应。
The authors suggest that the primary factors of the reheat embrittlement are precipitation of coarse carbide along the grain boundary and secondary hardening in the grain.
出现再热脆性的主要原因是晶界粗大碳化物的析出和晶内二次硬化。
The results show that the grain size have a obvious influence on strain-hardening rate and fracture behavior.
结果表明 ，晶粒尺寸对应变硬化率及断裂行为有显著的影响 ；
The results show that the grain size have a obvious influence on strain-hardening rate and fracture behavior.
结果表明 ，晶粒尺寸对应变硬化率及断裂行为有显著的影响 ；
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