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Effect of Heat Treatment on Microstructure and Mechanical Properties of GH4169 Superalloy
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Effect of Heat Treatment on Microstructure and Mechanical Properties of GH4169 Superalloy
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National Important Base Research and Development Program (2010CB631203)

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    摘要:

    研究了4種熱處理制度對GH4169合金顯微組織、室溫拉伸、650 ℃拉伸和持久性能的影響。結(jié)果表明：980 ℃固溶加兩階段時效處理，合金的室溫和650 ℃拉伸的屈服強(qiáng)度和抗拉強(qiáng)度最高；960 ℃固溶加兩階段時效處理，合金的持久壽命最長。固溶處理調(diào)整d相的含量，主要強(qiáng)化相g"在720 ℃時效時析出，輔助強(qiáng)化相g'在620 ℃時效析出。

    Abstract:

    The effects of the solution and aging treatment on the microstructure, the tensile properties at room-temperature and 650 oC and the stress rupture of GH4169 superalloy were investigated. The results show that after solution at 980 oC and aging at 720 oC plus 620 oC, both the yield strength and ultimate strength of the superalloy at room-temperature and 650 oC are highest; after solution at 960 oC and aging at 720 oC plus 620 oC, the stress rupture life of the superalloy tested at 650 oC and 725 MPa is the longest; the solution treatment can adjust the amount of d phase, primary strengthening g" phase precipitates upon aging at 720 oC, while assistant strengthening g ' phase precipitates at 620 oC.

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杜金輝,呂旭東,鄧 群. Effect of Heat Treatment on Microstructure and Mechanical Properties of GH4169 Superalloy[J].稀有金屬材料與工程,2014,43(8):1830~1834.[Du Jinhui, Lü Xudong, Deng Qun. Effect of Heat Treatment on Microstructure and Mechanical Properties of GH4169 Superalloy[J]. Rare Metal Materials and Engineering,2014,43(8):1830~1834.]
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  • 收稿日期:2013-10-14
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  • 在線發(fā)布日期: 2015-01-04
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