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服役后的René N5鎳基單晶高溫合金燃機(jī)渦輪葉片定量表征與評(píng)估
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作者單位:

1.北京科技大學(xué)新金屬材料國家重點(diǎn)實(shí)驗(yàn)室;2.北京航空材料研究院先進(jìn)高溫結(jié)構(gòu)材料重點(diǎn)實(shí)驗(yàn)室

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基金項(xiàng)目:

國家重點(diǎn)研發(fā)計(jì)劃（2016YFB0701402），航空科學(xué)基金（2015ZE21006）


Quantitative characterization and assessment of a served René N5 Ni-based single crystal industrial gas turbine blade
Author:
Affiliation:

1.State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing;2.Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials

Fund Project:

National Key R&D Program of China (No. 2016YFB0701402), Aeronautical Science Foundation of China (No. 2015ZE21006)

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    摘要:

    對(duì)一個(gè)服役近26000小時(shí)的René N5單晶高溫合金燃機(jī)高壓一級(jí)渦輪葉片進(jìn)行解剖分析，研究了葉片不同部位的組織演化和損傷程度。分析了γ′相的形貌和體積分?jǐn)?shù)，拓?fù)浞崔D(zhuǎn)程度，碳化物的形貌和成分。研究結(jié)果表明，γ′相的體積分?jǐn)?shù)和拓?fù)浞崔D(zhuǎn)程度可以作為服役葉片顯微組織損傷的定量表征參數(shù)，γ′相的形貌和TCP相的析出可以作為半定量的表征參數(shù)。根據(jù)以上參數(shù)，服役后的燃機(jī)渦輪葉片的組織損傷程度可以分為3個(gè)等級(jí)：輕度損傷，中度損傷和重度損傷。本研究結(jié)果為燃機(jī)用單晶渦輪葉片的組織損傷評(píng)價(jià)奠定了基礎(chǔ)，并對(duì)葉片服役安全具有重要意義。

    Abstract:

    A high-pressure 1st stage IGT blade made of René N5 served for nearly 26000 hours was studied to figure out the evolution of microstructure and the degradation degree in different locations of the blade. The morphology and volume fraction of γ′ precipitates, the topological inverse degree, and the morphology and composition of carbides were analyzed. It has been confirmed that the volume fraction of γ′ precipitates and topological inverse degree are applicable to be quantitative microstructural characteristic parameters to characterize the microstructural degradation in the served blade. And the morphology of the γ′ precipitates and the precipitation of TCP can be employed as the qualitative microstructural characteristic parameters. In terms of these parameters, the microstructural degradation of the served IGT blade could be classified into 3 degrees: slightly, moderately and seriously degraded. These results are expected to established as solid foundation for the assessment of the degree of the microstructural degradation of single crystal IGT blades and also have practical significance in service safety.

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引用本文

陳金賓,陳晶陽,惠希東,李青,肖程波.服役后的René N5鎳基單晶高溫合金燃機(jī)渦輪葉片定量表征與評(píng)估[J].稀有金屬材料與工程,2020,49(7):2207~2212.[chenjinbin, chenjingyang, huixidong, liqing, xiaochengbo. Quantitative characterization and assessment of a served René N5 Ni-based single crystal industrial gas turbine blade[J]. Rare Metal Materials and Engineering,2020,49(7):2207~2212.]
DOI：10.12442/j. issn.1002-185X.20190364

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  • 收稿日期:2019-04-26
  • 最后修改日期:2020-06-12
  • 錄用日期:2019-07-24
  • 在線發(fā)布日期: 2020-08-31
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