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精煉工藝對IN792合金冶金缺陷和拉伸性能的影響
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國家重點基礎(chǔ)研究發(fā)展計劃項目 (2010CB631200, 2010CB631206)


Effects of Refining Processes on Metallurgical Defects and Room Temperature Tensile Properties of Superalloy IN792
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    摘要:

    調(diào)整精煉溫度和時間，對不同精煉工藝下高溫合金IN792中冶金缺陷及O，N和S等元素含量的變化進行研究；用CS分析儀測定S含量，用TC-436氧氮測定儀測定O和N含量；通過金相顯微鏡和掃描電鏡，對疏松和夾雜物進行觀察和測定；并測定拉伸性能。隨著O和N含量增加，疏松易于形成；隨著O，N和S含量升高，夾雜物含量增加；提高精煉溫度和延長精煉時間，O，N和S的含量降低；合金的室溫抗拉強度和屈服強度提高

    Abstract:

    Metallurgical defects and the changes of O，N and S contents in superalloy IN792 were studied in the different refining processes. S content was measured using CS analysis apparatus, O and N contents were measured by TC-436 measurement apparatus, the mechanical properties of alloy were measured, also. The results show that shrinkage is easier to produce with increasing of O and N contents, and the contents of impurities are increased with increment of the contents of O，N and S. When the refining temperature is higher and refining time is longer, the contents of O，N and S are decreased, the UTS and YS are improved at room temperature.

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楊金俠,鄭 啟,紀曼青,孫曉峰,胡壯麒.精煉工藝對IN792合金冶金缺陷和拉伸性能的影響[J].稀有金屬材料與工程,2012,41(4):692~696.[Yang Jinxia, Zheng Qi, Ji Manqing, Sun Xiaofeng, Hu Zhuangqi. Effects of Refining Processes on Metallurgical Defects and Room Temperature Tensile Properties of Superalloy IN792[J]. Rare Metal Materials and Engineering,2012,41(4):692~696.]
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  • 收稿日期:2011-04-20
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