粉末冶金法较易获得细晶粒组织。
The fine grain of pure tantalum can be obtained easily through PM.
铸造细化金属的晶粒组织、改善其物理性能。
Forging refines the grain structure and improves physical properties of the metal.
随着锻造比的增大，晶粒组织逐渐细化，锻件力学性能提高。
It could be concluded that following the forging ratio increasing, the grains refined gradually and the mechanical properties of forgings increased.
本文研究了一种强有效的晶粒细化剂对铝合金宏观晶粒组织的影响。
The effect of a kind of efficient grain refiner on the macrostructure of aluminum alloy was investigated.
结果表明：合适与匹配的连铸工艺和电磁场处理可使镁铸坯晶粒组织细化。
The result shows that the size of crystal grain obtained by EMC in suitable technique can be refined.
采用形变热处理工艺，使工业用LF 6合金板材得到细小、等轴的晶粒组织。
A kind of fine and equiaxed crystal structure of LF6 aluminum alloy plate material is obtained by means of the technique of deformation heat treatment.
选择15%及以上的变形量，可以避免晶粒异常长大，并获得均匀细小的晶粒组织。
AGG can be avoided and the uniform fine grains can be gained when the strain is not less than 15%.
借助于高放大倍率的二次复型组织，观察了LF6铝合金超塑变形后的表面晶粒组织。
With the secondary duplicated model structure with high magnification, the surface grain structure of LF6 aluminum alloy superplastically deformed is observed.
结果发现：稀土显著细化了半固态铝合金的球形晶粒组织，并提高了球形晶粒的圆整度和均匀性。
The experimental result shows that re can refine the globular grains of semisolid Al-alloy remarkably, improve the roundness and uniformity of globular grains.
在超塑性变形过程中发生发生连续回复和再结晶，导致原始大晶粒组织经超塑性变形后的显著细化。
The initial large grain microstructure became much finer after superplastic deformation. The large grained superplastic phenomenon could be explained by continuous recovery and recrystallization.
超级钢的主要特征是高洁净度和超细晶粒组织，在不增加任何合金元素的情况下，其强度、韧性和使用寿命提高一倍。
Ultra steel is characterized by its higher cleanness and ultra-fine grain, thus it has higher strength, toughness and longer life even without addition of more alloying elements.
结果表明，激光处理后试样表面熔凝区的组织主要为胞状枝晶组织，经后续热处理可转变为细小的等轴晶粒组织，并形成了良好的超塑连接条件。
The results show that, after laser surface processing, a melt layer with cellular-dendrite structure is formed, which could transform into very fine-grained structure during the annealing treatment.
使用状态的组织为细晶粒的铁素体—珠光体，强度比普通碳素结构钢Q235高约20%～30%，耐大气腐蚀性能高20%～38%。
Using the state of the organization for the fine grain ferrite pearlite, strength than ordinary carbon structural steel Q235 about 20% ~ 30%, high atmospheric corrosion resistance of 20% ~ 38%.
研究了超细晶粒钢筋焊接接头的组织和力学性能。
The microstructure and mechanical properties of welded joint of ultra-fine grained rebar were studied.
这过程被称为完全退火，因为它去除了以前组织结构的所有痕迹、细化晶粒并软化金属。
This process is known as full annealing because it wipes out all trace of previous structure, refines the crystalline structure, and softens the metal.
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。
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.
试生产的盘条组织性能稳定，脱碳层薄，晶粒细小，夹杂物含量低，表面质量良好。
The trial produced rod is with stable tissue, decarbonization film thin, crystal particle tiny, slag little, and surface quality better.
在显微镜下观察到的某合金的结构特征(例如：晶粒和相的组织结构特征)。
The structural features of an alloy (e. g., grain and phase structure) that are subject to observation under a microscope.
结果表明，细小、球形而又弥散分布的含硅夹杂相有利于细化基体晶粒，改善材料的内部微观组织结构。
The results show that the fine, spherical and dispersed inclusion contained Si is in favored of refining matrix crystals and optimizing internal microstructure of the alloy.
主要技术路线是高洁净度、高均匀性、微合盒化、超细晶粒及组织。
The characters of new steels are high cleanliness, high homogeneity, ultra-fine grained and micro alloyed.
通过热处理手段获得可区分晶粒尺度和片层厚度的全片层组织。
The fully lamellar microstructures with different grain size and lamellar spacing were obtained by heat treatment.
结果表明，水龙头阀体开裂是由于存在过热造成的晶粒粗大、魏氏组织、铸造疏松等缺陷引起的脆性开裂。
The results show that the cracking of the tap valve is brittle crack, which is due to overheat to cause the formation of defects, such as coarse grains, Widmanstatten structure and porosity.
焊核区由于动态再结晶具有细小的等轴晶粒，旁边存在一个特殊的组织形貌——热机影响区域。
The fine grain and narrow HAZ were found in friction stir weld and the dynamic recrystallization produces fine grain.
组织分离完成之后，晶粒的尺寸和形状系数随时间逐渐增大。
After the structure separation completed, the grain size and shape factor increased with the increase of the heating time.
与其他烧结方法相比，激光烧结制备的纳米材料晶粒尺寸更为细小，组织结构更为致密。
Compared with other sintering methods, the nano-ceramic materials with the finer grain size and the higher density can be obtained by SLS technology.
结果表明，魏氏组织针由多个块状的亚晶粒组成，亚晶粒边界由位错缠结而成，在亚晶粒内有较高的位错密度；
The results show that Widmansttten structure needle consists of many blocky subgrains that have higher dislocation density and subgrain boundary is made up of dislocation tangle.
建立了强脉冲电磁场作用下铝合金凝固组织晶粒尺寸的人工神经网络BP算法模型。
BP algorithmic model was established for the artificial neural network of the grain size of Al-alloy's solidification structure under the action of strong pulse electromagnetic field.
本文从晶粒尺寸、夹杂物形态和大小以及组织结构类型等几个方面论述了管线钢韧性的控制或影响因素。
From the aspects of grain size, impurity shape and size, structure type and so on, the control or influence factors of pipeline toughness are discussed.
经试验分析是由于该段晶粒粗大，淬火时组织应力超过该段的材料强度所致。
Through test analysis, we found that it is caused by the large size grain in this section, as well as the structure stress in this section over the material strength.
经试验分析是由于该段晶粒粗大，淬火时组织应力超过该段的材料强度所致。
Through test analysis, we found that it is caused by the large size grain in this section, as well as the structure stress in this section over the material strength.
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