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Transformation mechanism of lamellar microstructure of AZ80 wrought Mg alloy during warm deformation LI Zhao-zhi(李兆智)1, 2, YANG Ya-qin(杨亚琴)1, ZHANG Zhi-min(张治民)1 1.College...: The microstructure especially the lamellar second phase evolution by a combination of deformation and heat treatment for AZ80 alloy was investigated. The results show that there are finer lamellar Mg17Al12......
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. The initial microstructure of the heat treated material is given in Fig.1. The microstructure shows a colony α structure consisting of lamellar α colonies in prior coarse β grains (average grain size of about... the subtransus deformation mechanisms of such alloys with lamellar structure for microstructure control. SESHACHARYULU et al and SEMIATIN et al[3-5] found dislocation glide and climb to be the main subtransus......
microstructure. The coarse Widmanstatten microstructure is composed of large β grain with continues grain boundary α and colony with alternated α phase and β phase lamellar. The direction of alternated... treatment at 915 ℃ for 1 h followed by air-cooling can achieve the highest impact toughness. The crack propagation path of bimodal microstructure is different from that of lamellar microstructure......
Al-Si alloy was studied. The phase constitution and microstructure of the coarse Al-Si alloy, slag and ZL101 were examined by X-ray diffractometry and scanning electron microscopy. The results show... Preparation of casting alloy ZL101 with coarse aluminum-silicon alloy YOU Jing(尤 晶)1, WANG Yao-wu(王耀武)1, FENG Nai-xiang(冯乃祥)1, YANG Ming-sheng(杨明生)2 1. School of Materials Science and Metallurgy......
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Application of cold drawn lamellar microstructure for developing ultra-high strength wires S. Goto1, R. Kirchheim2, T. Al-Kassab2, C. Borchers2 1. Faculty of Engineering and Resource Science... in the fields of automobiles, civil engineering and construction, machines and many other industries. An application of lamellar microstructure for developing ultra-high strength steel wires was studied......
titanium alloy TC11 (Ti-6.5Al-3.5Mo-1.5Zr-0.3Si) with coarse lamellar starting microstructure were investigated based on the hot compression tests in the temperature range of 950-1100 °C.... The microstructure observation of the deformed specimens in different domains matches very well with the optimized results. Key words: titanium alloy; coarse lamellar microstructure; high temperature......
, the limiting temperature and strain rate conditions for cavity nucleation are related to the volume fraction spheroidized of lamellar alpha phase. NICOLAOU et al[19] have found that when the microstructure... Cavity nucleation during hot forging of Ti-6Al-2Zr-1Mo-1V alloy with colony alpha microstructure DONG Xian-juan(董显娟)1, 2, LU Shi-qiang(鲁世强)1, ZHENG Hai-zhong(郑海忠)1, LI Xin (李 鑫)1, OUYANG De-lai......
℃ was studied. The thermal stability of coarse lamellar microstructure produced by heat treatment at 1 400 ℃ for 1 h, followed by furnace cooling is superior to that of the fine lamellar microstructure produced by air cooling. During the aging, the discontinuous coarsening (DC) occurs at the grain boundaries of the fine lamellar microstructure, then α 2 phase of the coarsened lamellar microstructures......