Effects of boron and carbon contents on long-term aging of Ni3Al-base single crystal alloy IC6SX
Effects of boron and carbon contents on long-term aging of Ni3Al-base single crystal alloy IC6SX
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DOI：
10.1016/j.proeng.2011.12.554
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Ming Li;Jinxia Song;Ya-fang Han
中科院分区：
文献类型：
--
作者：
Ming Li;Jinxia Song;Ya-fang Han
研究了硼和碳含量对Ni 3Al基单晶合金IC 6SX在1070°C长期时效后组织和力学性能的影响。结果表明，长期时效前，低硼碳含量试样的持久寿命比高硼碳含量试样的持久寿命长，但在1070°C时效后，持久寿命下降得更快。高硼碳含量试样经标准热处理后的显微组织中，除γ ′ + γ外，还含有粗大的γ ′和硼化物，在1070 ℃时效后，碳化物和Y-NiMo相析出较少。
Effects of contents of boron and carbon on microstructure and mechanical properties of Ni3Al-base single crystal alloy IC6SX after long-term aging at 1070°C were investigated. It was found that, stress rupture life of samples with lower contents of boron and carbon was longer than that of higher contents of boron and carbon prior to long-term aging, but decreased much faster after aging at 1070°C.Microstructure of samples with higher contents of boron and carbon after standard heat treatment contained bulky γ’ and borides besides γ’+γ, and less carbides and Y-NiMo phases precipitated after aging at 1070°C.