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核電用316H不銹鋼的蠕變性能評估
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核工業(yè)理化工程研究院 天津 國防科技工業(yè)核材料技術(shù)創(chuàng)新中心 天津

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TB31

基金項(xiàng)目:

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


Creep Data Prediction for Type 316H Stainless Steel Served in Nuclear Power Plant
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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:

    通過對核電用316H不銹鋼的蠕變數(shù)據(jù)分析,利用速率溫度參數(shù)模型擬合得出材料蠕變本構(gòu)方程。根據(jù)相關(guān)統(tǒng)計(jì)檢驗(yàn)方法,確定了材料的蠕變可靠度函數(shù)。結(jié)合Z"參數(shù)的數(shù)據(jù)分布,分別得出316H不銹鋼蠕變應(yīng)力-RTP參數(shù)-可靠度曲線和溫度-容許應(yīng)力-可靠度曲線。結(jié)合ASME的評價(jià)規(guī)范確定了316H不銹鋼在550℃-700℃下的容許應(yīng)力。結(jié)果表明,基于RMB"模型的蠕變本構(gòu)方程在擬合精度方面優(yōu)于其他傳統(tǒng)模型。實(shí)測數(shù)據(jù)均位于蠕變可靠性模型預(yù)測結(jié)果的99.7%置信區(qū)間內(nèi)。本文模型可以較好地評估316H不銹鋼的穩(wěn)態(tài)蠕變性能及容許應(yīng)力。

    Abstract:

    Creep life prediction is an important issue for components used for nuclear breeders at high temperature. Through analysis on creep data of 316H stainless steel served in reactor vessels, the steady creep rate equation was obtained by rate temperature parameter model. Reasonable statistical test results supported the reliability function of creep property. σ-RTP-R curves and T-[σ]-R curves were proposed for 316H stainless steel based on the distribution of Z’-parameter in this paper. The allowable stresses in service temperatures from 550℃ to 700℃ were also obtained according to the standard methods specified in ASME BPVC. The results demonstrate that RMB" model has not only good precision in comparison of other existent creep models, but also high prediction. The experimental creep data completely drop into 99.7% confidence interval of predicted results by reliability function. The steady state creep behavior and allowable stress of 316H stainless steel in experimental conditions can be well evaluated by the present models.

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引用本文

李 昂,吳 福,高 蔚,張 毅.核電用316H不銹鋼的蠕變性能評估[J].稀有金屬材料與工程,2021,50(2):531~536.[Li Ang, Wu Fu, Gao Wei, Zhang Yi. Creep Data Prediction for Type 316H Stainless Steel Served in Nuclear Power Plant[J]. Rare Metal Materials and Engineering,2021,50(2):531~536.]
DOI：10.12442/j. issn.1002-185X.20200186

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  • 收稿日期:2020-03-19
  • 最后修改日期:2020-04-03
  • 錄用日期:2020-04-17
  • 在線發(fā)布日期: 2021-03-09
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