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在保持其它合金元素含量基本不变的情况下，分别加入２．２％、３．２％和４．２％的Ｒｅ浇注单晶高温合金试块，研究了Ｒｅ含量对单晶高温合金拉伸强度和蠕变断裂寿命等的影响。结果表明：随Ｒｅ含量增加，６４９℃条件下的拉伸强度下降但塑性升高；９８２℃／２４８．２ＭＰａ、１０３８℃／２０６．８ＭＰａ及１０７０℃／１７６．８ＭＰａ条件下的蠕变断裂寿命显著提高而塑性有所降低；在相同的试验条件下，随合金的Ｒｅ含量增加，在蠕变断裂寿命提高的同时，筏排组织变大。
Re-casting single crystal superalloy test blocks of 2.2%, 3.2% and 4.2% were respectively added while keeping the contents of other alloying elements unchanged. The effect of Re content on the tensile properties of single crystal superalloy Strength and creep rupture life and so on. The results show that with the increase of Re content, the tensile strength at 649 ℃ decreases but the plasticity increases. The creep rupture life at 982 ℃ / 248.2MPa, 1038 ℃ / 206.8MPa and 1070 ℃ / 176.8MPa is significant And the plasticity decreases. Under the same test conditions, with the increase of the alloy Re content, the raft structure becomes larger as the creep rupture life increases.