The results show that, increasing cooling rate, pre-deformation and grain refinement are useful for spreading of the non-equilibrium microstructure around the primary grains.
结果表明：增加冷却速率、预变形处理和晶粒细化有利于初始凝固组织中存在的非平衡组织的分散细化。
Moreover, the refinement mechanism of alloy microstructure under electromagnetic vibration is also discussed.
对在电磁振荡作用下，合金凝固组织的细化机理进行了探讨。
Through the microstructure observation and hardness test of extrusion specimen, the grain refinement effect of AZ31 magnesium alloy under ECAP process was studied.
对挤压后的试样进行显微组织观察、硬度测试，研究等通道挤压工艺（ECAP）对AZ31镁合金的晶粒细化效果。
Molten melt superheat treatment is an effective means for microstructure refinement and advancement of alloy mechanical property.
熔体过热处理是细化组织提高合金力学性能的有效途径。
It is because of microstructure refinement, an increase in boundaries and dislocation multiplication.
阻尼性能提高是由于组织细化、界面增多以及位错增殖所致。
The effect of the finishing rolling temperature on the microstructure refinement and mechanical properties of the hot rolled dual-phase steel were studied at laboratory.
研究了终轧温度对高强热轧双相钢组织细化和力学性能的影响。
The refinement mechanism of electromagnetic vibration on alloy microstructure was also discussed.
对电磁振荡作用下，合金凝固组织的细化机理进行了探讨。
It was also found out that proper re element addition could increase the toughness of the weld metal and improve its microstructure by grain refinement.
适量的稀土元素可改善焊缝金属组织的形态、细化晶粒、提高韧性。
The effect of the finishing rolling temperature on the microstructure refinement and mechanical properties of the hot rolled dual-phase steel were studied at laboratory.
在实验室通过热轧实验，研究了热轧双相钢在奥氏体再结晶区和未再结晶区变形和卷取温度对高强热轧双相钢组织细化和力学性能的影响。
The effect of the finishing rolling temperature on the microstructure refinement and mechanical properties of the hot rolled dual-phase steel were studied at laboratory.
在实验室通过热轧实验，研究了热轧双相钢在奥氏体再结晶区和未再结晶区变形和卷取温度对高强热轧双相钢组织细化和力学性能的影响。
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