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基于可靠度的Incoloy800H管材蠕變性能分析
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1.核工業(yè)理化工程研究院 天津 300180國防科技工業(yè)核材料技術(shù)創(chuàng)新中心 天津300180;2.粒子輸運(yùn)與富集技術(shù)重點(diǎn)實(shí)驗(yàn)室 天津 300180

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中核集團(tuán)青年英才計(jì)劃菁英項(xiàng)目資助(項(xiàng)目號(hào)No.CNNC2019YTEP-IPCE01)


The Analysis on Creep Property of Incoloy800H Tube by Reliability Concept
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Institute of Physical and Chemical Engineering of Nuclear Industry

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The Elite Project for Young Talents of China National Nuclear Corporation No.CNNC2019YTEP-IPCE01

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    摘要:

    結(jié)合蠕變特征量-溫度參數(shù)模型,研究了Incoloy800H管材在600℃-1050℃下的蠕變行為,擬合得出材料穩(wěn)態(tài)蠕變速率、蠕變斷裂時(shí)間、蠕變第三階段起始時(shí)間的可靠性方程,并建立了管材容許應(yīng)力與服役溫度、可靠度的關(guān)系。結(jié)果表明,確定的蠕變特征量可靠性方程可以較好地預(yù)測Incoloy800H管材穩(wěn)態(tài)蠕變速率、蠕變斷裂時(shí)間、蠕變第三階段起始時(shí)間的變化行為。長時(shí)蠕變數(shù)據(jù)均位于對應(yīng)蠕變方程在可靠度0.997條件下的預(yù)測區(qū)域內(nèi)。與ASME推薦的容許應(yīng)力值相比,蠕變特征量可靠性方程可以提供更為準(zhǔn)確的容許應(yīng)力評估結(jié)果。

    Abstract:

    In order to take full advantage of Incoloy800H alloy, the creep behavior of Incoloy800H alloy tubes at temperatures ranging from 600℃to 1050℃ was investigated based on creep character-temperature parameter models. The reliability equations of steady creep rate, rupture time and initiation time of tertiary creep were obtained by multiple linear regression. The effective relationships among allowable stress, service temperature and reliability were established. The results demonstrate that the creep reliability equations make the prediction for creep behavior of Incoloy800H alloy tubes more accurately. The long-term creep data are completely located in the 0.997 confidence band of predicted results by corresponding reliability equations. In comparison with recommended allowable stresses by ASME, the creep reliability equations can provide more reasonable evaluated results.

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引用本文

李 昂,張 毅,高 蔚,吳 福,陳開媛.基于可靠度的Incoloy800H管材蠕變性能分析[J].稀有金屬材料與工程,2022,51(2):675~681.[Li Ang, Zhang Yi, Gao Wei, Wu Fu, Chen Kaiyuan. The Analysis on Creep Property of Incoloy800H Tube by Reliability Concept[J]. Rare Metal Materials and Engineering,2022,51(2):675~681.]
DOI：10.12442/j. issn.1002-185X.20210155

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  • 收稿日期:2021-02-25
  • 最后修改日期:2021-03-24
  • 錄用日期:2021-04-16
  • 在線發(fā)布日期: 2022-03-09
  • 出版日期: 2022-02-28