摘要
提出了一种通过双流浇注连续铸造方法生产合金成分随铸件截面连续变化的新型梯度材料的设想．采用自行研制的双流浇注半连续铸造装置对Al-Si二元合金进行了实验研究实验结果表明：通过调整铸造工艺参数，如浇注温度、内外浇包的流量比等，可以控制熔体的流动和凝固过程，获得铸件截面上不同的成分梯度分布．合金的力学性能。
A novel method of producing gradient material by continuous casting usingdouble--stream--pouring technique was proposed. The preparation of Al--Si gradient alloy wascarried cot by self--made double -- st ream -- pouring semi--continuous castingfacilities results show that in the steady state, the flow and the solidification of the outside stream andinside stream can be controlled by changing the parameters, such as casting temperature andvolume ratio of the two streams. Different gradient profile of composition in as--cast structurecan be obtained. The good corresponding relationships among the silicon concentration, theInicrostructure and the mechanical properity of the alloy are obtained.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第6期609-614,共6页
Acta Metallurgica Sinica
基金
广东省自然科学基金!19940005
国家教委回国留学人员基金!1994660
关键词
梯度材料
双流浇注
连续铸造
铝硅合金
铸造
gradient material, continuous casting, double -- stream -- pouring, technique,Al--Si binary alloy
