快速凝固Gd5Si2Ge2合金的显微组织与相组成

The Microstructure and Phase Composition of the Rapid Solidified Gd5Si2Ge2 Alloy

摘要:

研究了在真空电弧炉和快淬炉2种快速凝固条件下制备的Gd5Si2Ge2合金的显微组织与相组成。结果表明，Gd5Si2Ge2合金亿电弧炉熔炼条件下，具有不同质蟹的样品可以获得不同的显微组织与相组成。不同速度下，快淬甩带实验表明，在小于40m／s的快淬速度下，Gd5Si2Ge2合金为单斜Gd5Si2Ge2-型晶体结构：在50m／s的快淬速度下Gd5Si2Ge2合金包含Gd5Si4-型和Gd5Si2Ge2-型两相。证实了冷却速度对Gd5Si2Ge2合金的相组成有重要影响。

Abstract:

The microstructure and phase composition of Gd5Si2Ge2 alloy obtained by arc-melting and melt spinning processes were studied The results show that the arc-melted Gd5Si2Ge2 samples with different mass had different microstructure and phase composition. The Gd5Si2Ge2 alloys melt-spun under the velocity less than 40 m/s crystallize in the Gd5Si2Ge2-type structure; and the sample under the velocity of 50 m/s consists of Gd5Si2Ge2-type and Gd5Si4-type phases. The effect of solidification rates on the microstructure and phase composition were identified.