摘要
用Ｓｒ对Ａｌ－Ｓｉ合金ＬＭ６（英国牌号，我国相近牌号为ＺＬ１０２）进行变质处理，当ＬＭ６合金处于过共晶成分范围时，获得细小弥散分布的共晶Ｓｉ组织，但初晶Ｓｉ尺寸较大，呈多角形块状。将ＬＭ６合金调整为亚共晶成分后，几乎没有初晶Ｓｉ析出，从而得到变质效果良好的细小、弥散共晶Ｓｉ组织。
The modification of hypereutectic LM6 alloy with Sr is tested. The results indicate that when the LM6 alloy is in the hypereutectic state, the eutectic silicon is efficiently modified with Sr, but the effect of modification of the primary silicon with Sr is faint and its size is big, in the shape of multilateral figure block. Almost no primary silicon appear ally more and the eutectic silicon is fine, scattered and well-distributed after the composition of hypereutectic LM6 alloy is changed into that of hypoeutectic LM6 alloy.
出处
《轻合金加工技术》
CAS
北大核心
2000年第9期12-15,共4页
Light Alloy Fabrication Technology
