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layers in various metallic materials by near surface severe plastic deformation [J]. Sci Technol Adv Mater, 2004, 5: 145-152. [11] FAN Xin-min, ZHU Lin, HUANG Jie-wen. Surface nanocrystalli- zation... Surface nanocrystallization of 7A04 aluminium alloy induced by circulation rolling plastic deformation YE Hui-qiong(叶惠琼), FAN Xin-min(樊新民) Department of Materials Science and Engineering, Nanjing......
. The results show that the gradient distributions of composition and hardness in the transition layer of the composite plates still exist after plastic deformation of the ingots. Meanwhile, the thickness... of 7075 alloy. Key words: 7075/6009 composite ingot; plastic deformation temperature; microstructure; mechanical properties  ......
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of NiTi SMA tube, where severe shear deformation occurs. Microstructural observation results reveal that severe plastic deformation leads to a certain grain orientation as well as occurrence... tube; shape memory alloy; equal channel angular extrusion; severe plastic deformation; finite element method 1 Introduction The remarkable attractiveness of nickel-titanium shape memory alloy (NiTi SMA......
refinement. Key words: dual phase titanium alloy; Ti-3Al-4.5V-5Mo alloy; severe plastic deformation; microstructure refinement; nanocrystalline grains; texture 1 Introduction It has already been established... with extremely fine grains. Recently, severe plastic deformation (SPD) techniques, which have attracted increasing attentions in material fields, have been widely used to produce ultrafine grains......
Grain refinement in AZ31 magnesium alloy rod fabricated by extrusion-shearing severe plastic deformation process HU Hong-jun1, ZHANG Ding-fei2, YANG Ming-bo1, DENG Ming1 1. College of Materials... Received 25 February 2010; accepted 26 September 2010 Abstract: A new severe plastic deformation (SPD) method that is extrusion-shearing (ES), which includes initial forward extrusion and shearing process......
grain in size less than 10 μm is crucial in superplastic deformation of materials. Many researchers have produced fine-grained microstructure of the alloy via severe plastic deformation (SPD... D H. High strain rate superplasticity of submicrometer grained 5083 Al alloy containing scandium fabricated by severe plastic deformation [J]. Materials Science and Engineering A, 2003, A341: 273-281......
Flow behavior of Ti-46.2Al-2.5V-1.0Cr-0.3Ni alloy in secondary hot deformation SI Jia-yong(司家勇), HAN Peng-biao(韩鹏彪), CHANG Xia(昌 霞), ZHANG Ji(张 继) High Temperature Material Research Division... was investigated by the isothermal compression experiments. The direction of secondary hot deformation was taken to be vertical to the former forging axis. And the deformation activation energy......
and improved mechanical properties. Key words: pure aluminum powder; severe plastic deformation(SPD); equal channel angular pressing and torsion (ECAPT); numerical simulation 目前,采用大塑性变形技术(Severe plastic... aluminum alloy[J]. Materials and Design, 2012, 37: 13-18. [12] LATYPOV M I, ALEXANDROV I V, BEYGELZIMER Y E, LEE S, KIM H S. Finite element analysis of plastic deformation in twist extrusion[J......
. Influence of severe plastic deformation on aging effect of Al-Zn-Mg-Cu-Zr alloy [J]. Mater Sci Eng A, 1997, A234-236: 339-342. [17] RADMILOVIC V, THOMAS G, SHIFLET G J, STARKE E A. On the nucleation... Effect of large cold deformation after solution treatment on precipitation characteristic and deformation strengthening of 2024 and 7A04 aluminum alloys NING Ai-lin(宁爱林)1, 2, LIU Zhi-yi(刘志义)1......