摘要
采用SEM、EDX对Al RE Cu Mn Si铸造铝合金的高温性能进行了研究 ,分析了合金微观组织形貌特征和相的成分特点。结果表明 ,该合金在 3 5 0~ 40 0℃高温下力学性能未有明显下降 ,比一般耐热铝合金的承温能力明显偏高 ,这与合金中含有高温稳定的稀土化合物相直接相关 。
The microstructure and phase components of aluminum alloy Al-RE-Cu-Mn-Si were investigated by SEM and EDX. The result shows that with increasing of temperature mechanical property at 350~400℃ decreased but not obviously, heat-resisting capacity of the alloy is higher than common heat-resisting aluminum alloy. It was found that rare earth compound phases at grain boundary and inter-dendritic distributed perform hindrance action to plastic slide.
出处
《铸造》
CAS
CSCD
北大核心
2004年第7期528-530,共3页
Foundry