广州化工
廣州化工
엄주화공
Guangzhou Chemical Industry
2015年
21期
185-186,205
,共3页
铁碳相图%归类法%特性点%特性线%相区
鐵碳相圖%歸類法%特性點%特性線%相區
철탄상도%귀류법%특성점%특성선%상구
iron-carbon alloy phase diagram%classification method%characteristic point%characteristic curves%phase region
采用归类法，将铁碳合金相图中的特性点和特性线分为同素异构转变、三条水平线和三条溶解度曲线三组综合分析，相区分析建立在特性点和特性线的基础上，首先找到Fe3 C相并标注出L相，再根据纯铁的同素异构转变标注出δ相、γ相和a相后，采用“左侧相+右侧相”的方法就可迅速标注出双相。该方法使相图在教与学中更具条理性，对于后面铁碳合金结晶过程分析起到较好的辅助作用。
採用歸類法，將鐵碳閤金相圖中的特性點和特性線分為同素異構轉變、三條水平線和三條溶解度麯線三組綜閤分析，相區分析建立在特性點和特性線的基礎上，首先找到Fe3 C相併標註齣L相，再根據純鐵的同素異構轉變標註齣δ相、γ相和a相後，採用“左側相+右側相”的方法就可迅速標註齣雙相。該方法使相圖在教與學中更具條理性，對于後麵鐵碳閤金結晶過程分析起到較好的輔助作用。
채용귀류법，장철탄합금상도중적특성점화특성선분위동소이구전변、삼조수평선화삼조용해도곡선삼조종합분석，상구분석건립재특성점화특성선적기출상，수선조도Fe3 C상병표주출L상，재근거순철적동소이구전변표주출δ상、γ상화a상후，채용“좌측상+우측상”적방법취가신속표주출쌍상。해방법사상도재교여학중경구조이성，대우후면철탄합금결정과정분석기도교호적보조작용。
The characteristic point, characteristic curves and phase region in the iron-carbon alloy phase diagram were classified into three, three allotropic transformation, three horizontal lines and three solubility curve group by classification method. On this basis, phase diagram analysis was easy. First of all finding Fe3 C and marking out the L phase, then marking δ phase, a phase and γ phase according the iron’s allotropic transformation, finally, using the method of " left phase and right phase", the two-phase region can be rapidly annotated. This method makes the phase diagram more rational in teaching and learning and it has better auxiliary function for the analysis of the crystallization process of the iron carbon alloy.
