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EFFECT OF CARBON CONTENT ON MICROSTRUCTURE AND PROPERTIES OF HIGH STRENGTH AND HIGH ELONGATION STEELS D.X.Lou1,S.K.Pu1,B.F.Xu2,X.Chen1,A.M.Guo1,Z.X.Yuan2,Y.Chen2,S.B.Zhou1,P.H.Li1 (1.Technical...-rolled high strengthand high elongation steels with retained austenite were studied by discussing the in-fluence of different carbon content. The research results indicate that carbon contenthas......
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Effect of Yttrium Addition on Microstructural Characteristics and Superplastic Behavior of Friction Stir Processed ZK60 AlloyZ.A.Luo1,G.M.Xie1,Z.Y.Ma2,G.L.Wang1,G.D.Wang11. State Key Laboratory...(HAGBs) in the FSP alloys increased from 64% to 90%, and a certain amount of twins appeared in the FSP ZK60-Y alloy. The maximum elongation of 1200% and optimum strain rate of 3 103s1achieved at 450 C......
of 1.67×10-4-1.67×10-2 s-1. By contrast, the Al-Mg-Er alloy has low superplastic and all elongations to failure are lower than 300% under all testing conditions. Furthermore, the maximum elongation.... The stress exponent is an important index to judge the superplastic behavior of materials. And the value of stress exponent has a great influence on superplastic deformation and elongation......
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, Japan Received 17 October 2013; accepted 8 April 2014 Abstract: The Al-Zn eutectoid alloy has been widely known as a typical superplastic metallic material, where fine-grained microstructure is usually... the hot-rolling process. A minimum grain size of 1.6 μm was obtained in process 3. Tensile tests at room temperature showed that the elongation to failure was the largest in process 3. Key words: aluminum......