CAJ | 학술논문

采用实时观测装置和定向凝固系统研究了SCN-Cam(Succinonitrile-wt%Camphor,wt%为质量分数)模拟合金的共晶生长过程。实验结果表明, SCN-23.6% Cam共晶模拟合金所形成的棒状共晶的相间距λ随着界面推移速度V 的增大而减小,与J-H模型吻合得较好；随着试样盒厚度的增加,SCN-23.6% Cam模拟合金的棒状共晶相间距增大；施加超声振动时,SCN-Cam模拟合金相图的共晶成分点向SCN方向移动,α单相区和(L+α)两相区减小,共晶线温度升高。
채용실시관측장치화정향응고계통연구료SCN-Cam(Succinonitrile-wt%Camphor,wt%위질량분수)모의합금적공정생장과정。실험결과표명, SCN-23.6% Cam공정모의합금소형성적봉상공정적상간거λ수착계면추이속도V 적증대이감소,여J-H모형문합득교호；수착시양합후도적증가,SCN-23.6% Cam모의합금적봉상공정상간거증대；시가초성진동시,SCN-Cam모의합금상도적공정성분점향SCN방향이동,α단상구화(L+α)량상구감소,공정선온도승고。
The eutectic growth process of SCN-Cam (Succinonitrile-wt%camphor,wt% was as mass fraction) model alloy was studied with real-time observation devices and directional solidification system.It was indicated that the rod-like eutectic phase spacings of the SCN-23.6%Cam eutectic model alloy decrease with the increase of interface moving rates which was coincided with J-H model′s;with the increase of sample cell thicknesses, rod-like eutectic phase spacings of SCN-23.6%Cam model alloy increase;under the ultrasonic vibration condi-tion,the eutectic composition point of the SCN-Cam model alloy phase diagram moves to SCN direction,the ranges ofαphase and L+αphase decrease,and the eutectic temperature increases.