EFFECT OF CARBON AND BORON ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A SINGLE CRYSTAL SUPERALLOY RR 2072
来源期刊：Acta Metallurgica Sinica2005年第1期
论文作者：Y.S.Yoo C.Y.Jo J.H.lee D.H.Ye D.H.Kim
Key words：single crystal superalloy; defect tolerance; directional solidification; creep rupture;
Abstract: Carbon and boron have been considered to strengthen grain boundaries that might form during single crystal casting.In this study the effect of boron on solidification behavior and creep properties of the carbon aoped single crystal RR 2072 has been investigated.In order to understand solidification behavior with boron addition, the solid/liquid interface morphology and solidification microstructure were examined with solidification rate.The relationship between microstructural evolution and creep properties of the carbon and boron modified single crystal has been also investigated.
Y.S.Yoo1，C.Y.Jo1，J.H.lee2，D.H.Ye2，D.H.Kim1
(1.High Temperature Materials Laboratory, Korea Institute of Machinery & Materials, 66 Sangnam, Changwon, Kyungnam 640-010, S. Korea;
2.Dept. of Metallurgy, Changwon National Univerisity, 9 Sarim, Chagwon, Kyungnam 640-773, S. Korea)
Abstract:Carbon and boron have been considered to strengthen grain boundaries that might form during single crystal casting.In this study the effect of boron on solidification behavior and creep properties of the carbon aoped single crystal RR 2072 has been investigated.In order to understand solidification behavior with boron addition, the solid/liquid interface morphology and solidification microstructure were examined with solidification rate.The relationship between microstructural evolution and creep properties of the carbon and boron modified single crystal has been also investigated.
Key words:single crystal superalloy; defect tolerance; directional solidification; creep rupture;
【全文内容正在添加中】
