| INFLUENCE OF ASSOCIATED AND SEPARATE PRECIPITATION OF γ″ AND γ′ ON STRUCTURE STABILITY IN INCONEL718 AND MODIFIED ALLOYS |
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| 作者姓名： | DONG jianxin XIE Xishan ZHANG Shouhua University of Science and Technology Beijing Beijing China doctorate student |
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| 作者单位： | DONG jianxin XIE Xishan ZHANG Shouhua University of Science and Technology Beijing，Beijing，China doctorate student，Department of Materials Science and Engineering，University of Science and Technology Beijing，Beijing 100083，China |
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| 摘 要： | The precipitation behavior in Inconel 718 and modified alloys has been studied by means ofTEM.The structure of associated precipitation and compact morphology of γ″+γ′ were ob-tained by modifying the contents of Al,Ti and Nb.Experimental results show that the com-pact morphology of γ″+γ′ has the best structure stability at higher temperatures.Instead ofthe transformation γ″→δ in alloy 718 the dissolution of strengthening phases in modified alloyleads material degradation.
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| 收稿时间： | 1993-12-25 |
| 修稿时间： | 1993-12-25 |
INFLUENCE OF ASSOCIATED AND SEPARATE PRECIPITATION OF γ″ AND γ′ ON STRUCTURE STABILITY IN INCONEL718 AND MODIFIED ALLOYS |
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| DONG jianxin XIE Xishan ZHANG Shouhua University of Science and Technology Beijing,Beijing,China doctorate student,.INFLUENCE OF ASSOCIATED AND SEPARATE PRECIPITATION OF γ″ AND γ′ ON STRUCTURE STABILITY IN INCONEL718 AND MODIFIED ALLOYS[J].Acta Metallurgica Sinica(English Letters),1993,6(6):410-414. |
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| Authors: | DONG jianxin XIE Xishan ZHANG Shouhua University of Science and Technology Beijing Beijing China doctorate student |
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| Affiliation: | DONG jianxin XIE Xishan ZHANG Shouhua University of Science and Technology Beijing,Beijing,China doctorate student,Department of Materials Science and Engineering,University of Science and Technology Beijing,Beijing,China |
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| Abstract: | The precipitation behavior in Inconel 718 and modified alloys has been studied by means of TEM.The structure of associated precipitation and compact morphology of γ″+γ′ were ob- tained by modifying the contents of Al,Ti and Nb.Experimental results show that the com- pact morphology of γ″+γ′ has the best structure stability at higher temperatures.Instead of the transformation γ″→δ in alloy 718 the dissolution of strengthening phases in modified alloy leads material degradation. |
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| Keywords: | superalloy structure stability associated precipitation compact morphology Inconel 718 |
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