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Characterization of Microstructure of Permanent Mold Cast Zinc Alloy ZA27 LI Yuan-dong1,HAO Yuan1,CHEN Ti-jun1 (1.State Key Lab of Advanced Nonferrous Materials, Lanzhou University of Technology, Lanzhou, China) 摘要:The microstructure of permanent mold cast zinc alloy ZA27 was examined by SEM and TEM after natural aging for 18 months. It was found that the primary α'' phase, peritectic......
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similar to the microstructure of the thixoformed ZA27 alloy [30]. High corrosion resistance of ZA27 alloy in the natural atmospheres and natural waters is well known [32]. The most common form... of thixoformed and heat-treated ZA27 alloys was investigated. The microstructure of ZA27 alloy was affected by heat treatment. The process of electrochemical corrosion occurs in both ZA27 alloys through......
Effect of specific pressure on microstructure and mechanical properties of squeeze casting ZA27 alloy LI Run-xia(李润霞), LI Rong-de(李荣德), BAI Yan-hua(白彦华), QU Ying-dong(曲迎东), YUAN Xiao-guang(袁晓光... alloy solidified at high pressure, and the fine microstructure is obtained with the increase of pressure. Al and Cu elements are homogeneously distributed in matrix of squeeze casting ZA27 alloy......
by suitable heat treatments. Key words: ZA27 alloy; heat treatment; solid solution; aging; mechanical properties; microstructure 1 Introduction A new series of hyper-eutectic zinc-aluminum based alloys were... at elevated temperature. Fig. 5 XRD patterns of supersaturated ZA27 alloy after various periods of aging 3.3.2 Microstructure analysis Figure 6 shows the SEM images of the supersaturated ZA27 alloy after......
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Microstructure of Zn-Al4 alloy microcastings by micro precision casting based on metal mold LI Bang-sheng(李邦盛)1, 2, REN Ming-xing(任明星)1, 2,YANG Chuang(杨 闯)1, 2, FU Heng-zhi(傅恒志)2 1. Micro/Nano.... This kind of microstructure can promote mechanical properties of microcasting. Key words: metal mold micro precision casting; microcasting; microstructure  ......
MICROSTRUCTURE ANALYSIS AND MECHANICAL PROPERTIES OF Zn-Al ALLOY ROD PRODUCED BY HEATED MOLD CONTINUOUS CASTING F.Y.Yan1,Y.Ma1,Y.Hao1,H.J.Liu2 (1.State Key Laboratory of Advanced Nonferrous... and ZA27 is α. (2) Through the test to the as-cast ZA alloy lines made in continuous casting by heated mold, it is found that the tensile strength and hardness increase greatly, but the elongation......
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J. Cent. South Univ. (2016) 23: 515-522 DOI: 10.1007/s11771-016-3097-x Effect of optimal aging treatment on magnetic performance and mechanical properties of sintered Nd-Fe-B permanent magnets DING... words: Nd-Fe-B permanent magnets; aging treatment; mechanical property; acoustic emission; fracture analysis; Nd-rich phase 1 Introduction As the third generation of rare earth permanent magnet materials......