共搜索到38998条信息，每页显示10条信息，共3900页。用时：0小时0分0秒811毫秒
Plastic Deformation in Quench-and 650℃ Tempered Steel刘禹门摘 要:<正> The variations of the dislocation structuresin the quench and 650℃ tempered steel... with high dislocation density and thedeveloped dislocation cells are formed.关键词:......
and ball-like. It is indicated that the dominant superplastic deformation mechanism at high strain rate is both grain refinement and grain boundary sliding. Key words: AZ31 magnesium alloy; high... (ECAE)[7-9]. The grain refinement not only complicates the materials preparation, but also requires low-temperature forming to avoid grain growth during deformation. However, strain rate is a key......
that the thixotropic plastic deformation of the composites is highly sensitive to temperature. The tendency is thought to be the result of variation of volume fractions of solid α phase. When the specimens have high solid volume fractions, the solid grains contact with each other and form a net, sliding and rotation of grains become hard. The plastic deformation of solid particles is the main mechanisms......
Numerical simulation of ductile fracture behavior for aluminum alloy sheet under cyclic plastic deformation HU Xing1, ZHAO Yi-xi2, LI Shu-hui1, LIN Zhong-qin1 1. State Key Laboratory... Received 22 June 2010; accepted 10 December 2010 Abstract: A numerical analysis of mechanical behavior of aluminum alloy sheet under cyclic plastic deformation was investigated. Forming limit......
Atomistic Simulation of the Orientation-dependent Plastic Deformation Mechanisms of Iron NanopillarsY.Zhang 1),D.J.Yu 1) and K.M.Wang 2) 1) Anshan Normal University,43 Pingan... the onset of their plastic deformation behaviors.Yielding was found to occur through two different mechanisms for [001] and [110] tensions.In the former case,plastic deformation is initiated......
is a prerequisite[6-7]. Grain refinement by severe plastic deformation has been known as a potential and important tool for high strain rate or low temperature superplasticity[8-9]. Research shows that most...; superplasticity; microstructure; deformation mechanism 1 Introduction Magnesium alloy has high potential as structural material. However, its hexagonal crystal structure provides a limited number of slip systems......
and discussed. The results show that the grain of surface layer of Super304H stainless steel is refined with high density of dislocations or stacking faults by plastic deformation after shot peening...: Severe plastic deformation layer was synthesized on the surface of Super304H stainless steel by surface shot peening. The microstructures and properties of plastic deformation layer were characterized......
, and the corresponding yield stress increases significantly with the increasing temperature, indicating that the temperature is beneficial to improving the resistance to compressive plastic deformation... temperature, indicating that the temperature is beneficial to improving the resistance to compressive plastic deformation. With the temperature increased from 20 °C to 40 °C or 60 °C, the failure mode......
%, 83%, 87% and 90%, respectively. The corrosion properties of different deformed AZ80 samples were studied by galvanic test in 3.5% NaCl solution. The results show that plastic deformation could... alloys. For AZ80 alloys, the smaller the grain size is, the more homogeneous the structure is, and the better the corrosion resistance is. Key words: corrosion property; plastic deformation; AZ80......
magnesium alloy; twinning; crystal plasticity; plastic deformation 1 Introduction Low density, good damping properties, high specific stiffness and strength make wrought magnesium alloys attractive...Trans. Nonferrous Met. Soc. China 25(2015) 3595-3603 Simulation of mechanical behavior of AZ31 magnesium alloy during twin-dominated large plastic deformation Zhi-qiang WANG, Adrien CHAPUIS, Qing LIU......
