The microstructure and performances of GH4169 Ni-based alloy were studied after adding rhenium (Re) and wolfram (W) elements and then conducting heat treatment. The alloy containing Re element showed less δ phase after heat treatment. For both alloys containing W element and the GH4169 alloy without any element, δ phase and rectangular carbide were all precipitated after the heat treatment. The creep rupture life of the alloy added with Re element was higher than that of the alloy added with element W at high-temperature. When the mixture of 75% Na₂SO₄ and 25% NaCl was applied at 950°C under the same conditions, the thermal corrosion resistance of Ni-based alloy containing Re was obviously better than that of Ni-based alloy containing W. The hot corrosion resistance of GH4169 alloy without adding any element was slightly better than that of the alloy with W.

中文翻译：

---

Wolf和钨对选择性激光熔融GH4169镍基合金的组织和性能的影响

添加adding（Re）和钨（W）元素并进行热处理后，研究了GH4169 Ni基合金的组织和性能。热处理后，含有Re元素的合金的δ相少。对于含有W元素的合金和不含任何元素的GH4169合金，在热处理后都析出了δ相和矩形碳化物。添加Re元素的合金在高温下的蠕变断裂寿命高于添加W元素的合金的蠕变断裂寿命。当混合物中75％的Na ₂ SO ₄ 在相同条件下于950°C施加25％NaCl时，含applied的Ni基合金的耐热腐蚀性能明显好于含W的Ni基合金。GH4169合金的耐热腐蚀性能不添加任何元素比含W的合金稍好