用ＤＳＣ热分析和快速凝固方法对过共晶Ａｌ－１８％Ｓｉ合金熔体结构特征进行了分析研究，着重考察了液态过热温度和元素Ｐ对熔体结构特征的影响．结果表明，在液态区域其结构特征存在三个区域：低温微观不均匀区域、中温微观不均匀向微观均匀过渡区域和高温微观均匀区域．Ｐ增加低过热过共晶Ａｌ－ｌ８％Ｓｉ熔体的微观不均匀性．
篖iquid structure features of hypereutectic Al-18%Si alloy have been analyzed by DSC analysis and rapid solidification method. The influences of superheating temperature and P on them have also been studied. Three zones of molten hypereutectic Al-18%Si alloy stracture: a micro-inhomogeneous zone in low liquid temperatures,a transition zone from the micro-inhomogeneous to the micro- homogeneous in middle temperature and micro-homogeneous zone in high temperature are presented. Under low temperature,the micro-inhomogeneity was strengthened by the addition of P atoms.
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] | KoboyashiK,HoganLM．JMaterSci,1985 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%