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Mechanical and electrochemical characteristics evaluation in annealing treatment for ship material Seok-Ki JANG1, Young-Jae JEONG2, Seong-Jong KIM1 1. Division of Marine Engineering... on the electrochemical and mechanical properties of SS400 steel was investigated, and the effects of annealing conditions on notched specimens subjected to the slow strain rate test (SSRT) were studied......
Effect of vacancy defects on electronic properties and activation of sphalerite (110) surface by first-principles CHEN Jian-hua(陈建华)1, CHEN Ye(陈 晔)2, LI Yu-qiong(李玉琼)2 1. College of Resources...: The electronic properties of sphalerite (110) surface with Zn-vacancy and S-vacancy were calculated by using density-functional theory, and the effects of vacancy defect on the copper activation of sphalerite were......
Microstructure and mechanical properties of A356 thixoformed alloys in comparison with gravity cast ones using new criterion A. FADAVI BOOSTANI, S. TAHAMTAN Department of Materials... superior mechanical properties, especially elongation, and consequently intergranular fracture mode. On the contrary, samples with higher SDR index have inferior mechanical properties and fracture path......
Damping behavior and mechanical properties of Mg-Cu-Mn alloy processed by equal channel angular pressing ZHENG Ming-yi(郑明毅), FAN Guo-dong(范国栋), TONG Li-bo(佟立波), HU Xiao-shi(胡小石... capacity of the alloy at ambient and elevated temperatures were discussed. Key words: Mg-Cu-Mn alloy; ECAP; microstructure; mechanical properties; damping capacities ......
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)0.37-O6.43 glass. The first crystallization reaction occurs at 1223-1273K and the tetragonal zirconia oxide forms, the crystallization activation energy is 518-538kJ/mol. The second crystallization reaction occurs at 1423-1473K. The main phases precipitated are mullite and cristobalite, the crystallization activation energy is 522-545kJ/mol. The zirconia oxide existence can decrease the crystallization......
materials; equal channel angular pressing; Al; mechanical behavior; strain rate sensitivity; temperature dependence; activation volume 1 Introduction In the past 30 years, the ultrafine-grained... weaker than that of the coarse-grained Al. Based on the experimental results, the apparent activation volume was estimated at different temperatures and strain rates. The forest dislocation interactions......
:1672-7207(2012)08-2916-05 Chemical variants and modification mechanism for water-saturated fluorgypsum in calcination and activation process GUO Zhao-Hui, ZHANG Kang, ZHANG Hui, XING Xiang-Guo, XIAO... and thermogravimetric analysis (DTA-TGA). Chemical variants characteristics and modification mechanism of water-saturated fluorgypsum in calcinations and activation process with external modifiers......
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