Whatisdifferenceincharacteristicsbetweenductilefractureandbrittle?Whythelatterismoreriskyinpractice?(韧性和脆性断裂特征之间的差异是什么?为什么在实践中,后者更危险的呢?)相关知识点: 试题来源: 解析 答:韧性断裂:韧性断裂在断裂前产生较大的塑性变形,断口呈暗灰色的纤维状,微观上断口以微孔聚合机制形成,断裂过程为:...
whereas those with a diameter of ∼200 nm showed brittle-like fracture without remarkable plastic deformation and a rough fracture surface[117]. On the other hand, the ductile–brittle fracture transition also depends on multiple factors, such as metal type, sample geometry, and microstructure, ...
Damage and fracture of ductile metal materials are greatly associated with evolution of their microstructure under loading, which meso-dimensionally corres... ZM Shi,HL Ma,JB Li - 《Engineering Fracture Mechanics》 被引量: 7发表: 2011年 3D-simulation of Ductile Damage Evolution in Multi-phase Ste...
In the absence of shear bands, nucleation of cavies/voids and subsequent void growth and coalescence dominate the initial plastic failure process, enabling BMGs to display the essential characteristics of ductile fracture, with deep dimples and cup-and-cone morphology. This ductile fracture only ...
When the crystal size is about three nanometers (billionths of a meter), the material has its ultra-strong and ductile characteristics.(当晶体大小大约为3纳米(1纳米等于10亿分之一米)时,天然丝材料具有超强的强度与延展性特征。) The isothermal quenching process of the ductile iron camshaft was an...
The report summarizes the work performed in support of the development of fracture criteria for steel weldments in arctic structures. The ductile-to-brittle transition behavior of a shielded metal-arc weld, typical of steel weldments in arctic structures, has been studied. Fracture toughness, Charpy...
摘要: 1. The low parameters of the static, dynamic, and cyclic fracture toughness of rolled metal in the z-direction are one of the reasons for formation of lamellar cracks in welded structures...DOI: 10.1007/BF01524137 被引量: 4
Chapter 3Brittle and Ductile FracturesAbstract In this chapter, the main characteristics of brittle and ductile fractures,caused by single load application, are described. Each section begins with adescription of the macroscopic features that allow for identif i cation of brittle andductile fractures,...
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