有魏氏组织的试样较呈等轴铁素体的试样有更高的冲击韧性和更低的韧脆转变温度。
The specimens with Widmanstatten structure have higher impact strength and lower ductile-brittle transition temperature than those with equiaxial granular ferrite structure.
介绍了关魏氏组织形成的贝氏体型切变理论、类马氏体相变理论和扩散型台阶长大理论。
The theories about formation of Widmonstatten, Bainite shear and Martensite transformation are introduced, and the theory about growth of diffusion types of ledge is recommended as well.
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.
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.
该项研究描述了铁碳合金中魏氏组织和马氏体的形成，所用合金具有宽的碳含量范围，热处理时采用的冷却速率范围也是宽的。
The research describes the formation of Widmanstatten structure and martensite in iron-carbon alloys possessing a broad range of carbon contents and heat treated using a broad range of cooling rates.
结果表明，由于连杆锻后宽度尺寸不够，在增加了热矫形工序后造成其变形量处于临界变形区，导致分模面切边带区出现严重的混晶和魏氏组织。
The result showed hot sizing was the main factor to cause critical deformation, to make mixed grain and coarse grain widmanstatten appear in parting face.
结果表明，钢中魏氏体组织、非金属夹杂物及带状组织是导致冲击性能偏低的主要原因。
It is resulted Widmanstatten structure, inclusion and banded structure are mainly reasons causing impact property lowness.
结果表明，钢中魏氏体组织、非金属夹杂物及带状组织是导致冲击性能偏低的主要原因。
It is resulted Widmanstatten structure, inclusion and banded structure are mainly reasons causing impact property lowness.
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