Effect of High-Energy Electropulsing on the Phase Transition and Mechanical Properties of Two-Phase Titanium Alloy Strips(Retracted article. See vol.19, artn.1770028, 2017)

Ye Xiaoxin; Tse Zion T. H.; Tang GuoyiSong Guolin

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Effect of High-Energy Electropulsing on the Phase Transition and Mechanical Properties of Two-Phase Titanium Alloy Strips(Retracted article. See vol.19, artn.1770028, 2017)

机译：Effect of High-Energy Electropulsing on the Phase Transition and Mechanical Properties of Two-Phase Titanium Alloy Strips(Retracted article. See vol.19, artn.1770028, 2017)

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abstract_textpThe effect of high-energy electropulsing treatment (EPT) on the phase transition and mechanical properties of the two-phase Ti-6Al-4V alloy strips (in the solid solution state) was studied with the help of uniaxial tensile machine, X-ray diffraction, optical stereo-microscope, scanning electron microscope, and electrical resistance meters. Results show that the ductility of the titanium alloy strips under EPT could be enhanced remarkably at most by 225 while keeping the tensile strength nearly unchanged. EPT facilitates beta-Ti phase precipitation noticeably with increasing percentage of the beta phase and the average size of the beta phase. In addition, precipitated beta phase gathers coarsening, forms into continuous strips and migrates from the interior grains to the inter-granular regions transforming the wormlike microstructure into the equiaxed microstructure. The mechanism for rapid phase change during EPT is put forward with increasing the nucleation rate of the alpha - beta phase transformation and accelerating the diffusion flux of vanadium atoms under the coupling of the thermal and athermal effects. Therefore, a highly efficient aging treatment method for titanium alloys is provided to prepare advanced engineering materials with outstanding mechanical properties, which can be widely applied in the aerospace and biomedical fields./p/abstract_text

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来源
《advanced engineering materials》 |2015年第7期|995-1007|共13页
作者
Ye Xiaoxin; Tse Zion T. H.; Tang GuoyiSong Guolin;
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作者单位

Tsinghua Univ, Grad Sch Shenzhen, Adv Mat Inst, Shenzhen 518055, Peoples R China;

Tsinghua Univ, Dept Mat Sci & Engn, Minist Educ, Key Lab Adv Mat, Beijing 100084, Peoples R China;

Univ Georgia, Coll Engn, Athens, GA 30602 USA;

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正文语种英语
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关键词
HEAT-TREATMENT; SOLID SOLUBILITY; TI-6AL-4V ALLOY; MICROSTRUCTURE; EVOLUTION; TEXTURE; MICROHARDNESS; DEFORMATION; BEHAVIOR; COPPERS;

Effect of High-Energy Electropulsing on the Phase Transition and Mechanical Properties of Two-Phase Titanium Alloy Strips(Retracted article. See vol.19, artn.1770028, 2017)

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