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熱處理對FGH96粉末高溫合金裂紋擴(kuò)展速率的影響
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國家自然科學(xué)基金資助項(xiàng)目（50771011）


Influence of Heat Treatments on Crack Propagation Rates of FGH96 P/M Superalloys
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    摘要:

    研究不同熱處理?xiàng)l件下FGH96粉末高溫合金在650 ℃空氣中疲勞/蠕變交互作用下的裂紋擴(kuò)展速率，分析不同熱處理對FGH96粉末高溫合金裂紋擴(kuò)展速率的影響規(guī)律。結(jié)果表明：提高固溶溫度和鹽浴溫度可降低合金的裂紋擴(kuò)展速率，固溶溫度對裂紋擴(kuò)展速率的作用程度大于鹽浴溫度的作用程度。降低時(shí)效溫度和縮短時(shí)效時(shí)間也可延緩合金的裂紋擴(kuò)展速率，時(shí)效溫度對裂紋擴(kuò)展速率的影響大于時(shí)效時(shí)間。另外，增加保載時(shí)間可以加快合金的裂紋擴(kuò)展速率，但保載時(shí)間的影響隨著時(shí)效溫度的升高而減小。

    Abstract:

    Crack propagation rates of FGH96 P/M superalloys with different heat treatments were tested and compared under fatigue/creep interaction at 650 ℃ in air. Influence of heat treatments on the crack propagation rates of FGH96 P/M superalloys was investigated. The results indicate that the crack propagation rates were decreased when increasing the solid solution temperature or salt bath temperature; the effect of solid solution temperature was greater than that of salt bath temperature. Lower aging temperature and shorter aging time also delayed the crack propagation rates; the effect of the aging temperature was greater than that of the aging time. In addition, the crack propagation rates were increased with the dwelling time prolonging, and its effect decreased with the aging temperature increasing.

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王 璞,董建新,張義文,謝錫善.熱處理對FGH96粉末高溫合金裂紋擴(kuò)展速率的影響[J].稀有金屬材料與工程,2010,39(1):157~161.[Wang Pu, Dong Jianxin, ZhangYiwen, Xie Xishan. Influence of Heat Treatments on Crack Propagation Rates of FGH96 P/M Superalloys[J]. Rare Metal Materials and Engineering,2010,39(1):157~161.]
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  • 收稿日期:2009-01-20
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