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研究了悬浮浇注和Sr变质对A356合金组织性能的影响。结果表明，在A356合金液中加入2％的悬浮剂或加入0．06％Sr（Al－5％Sr中间合金）进行变质，可明显改善合金组织．且力学性能（σb及δ）均能提高20％左右。另外，对重熔冒口回炉料进行悬浮浇注，其组织和性能接近母材。
The effects of suspension casting and Sr modification on the microstructure and properties of A356 alloy were investigated. The results show that adding 2% suspending agent into the A356 alloy liquid or adding 0.06% Sr (Al-5% Sr master alloy) for modification can obviously improve the alloy structure. And mechanical properties (σb and δ) can be increased by about 20%. In addition, remelting riser back to the charge suspension casting, its organization and performance close to the parent material.