Application of modified θ projection concept to predict creep curves and failure live of 12CrlMoV Steel

机译：改进的θ投影概念在12CrlMoV钢的蠕变曲线和失效寿命预测中的应用

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Creep rupture tests have been carried out on 12CrlMoV steel widely used in fossil power plant over a range of stresses at 510℃, 540℃ and 570"C.The creep curves of the steel have been described precisely using the modified θ equation ω= θ_1t+θ_2(e~(θ_3~t)-1) The relationships among θi, stresses and temperatures have been established on 12CrlMoV steel. Thus, it is convenient that the long term curves of the steel at high temperature and lower stresses can be predicated. Then, the residual creep lives of the components at high temperature can be predicated. The creep rupture lives predicted by the modified θ projection concept and the L-M parameter method have also been compared in this paper.

机译：已对在化石电厂中广泛使用的12CrlMoV钢在510℃，540℃和570“ C的应力范围内进行了蠕变断裂试验。使用修正的θ方程ω=θ_1t精确描述了钢的蠕变曲线。 +θ_2（e〜（θ_3〜t）-1）在12CrlMoV钢上建立了θi，应力和温度之间的关系，因此可以方便地推断出钢在高温和较低应力下的长期曲线然后，可以估算出部件在高温下的残余蠕变寿命，并对通过改进的θ投影概念和LM参数方法预测的蠕变断裂寿命进行了比较。

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来源
《International Conference on Life Management and Life Extension of Power Plant May 18-20, 2000, Xi'An, China》|2000年|p.169-180|共12页
会议地点 Xian(CN)
作者
Li Yimin; Shu Guogang; Liang Changqian; Zhao Yanfen; Cheng Guoliang;
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作者单位

Thermal Power Research lnstilule,State Power Co. of PR.China;

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原文格式 PDF
正文语种 eng
中图分类电工技术;
关键词
creep curve; modified θ equation; creep life; L-M parameter method;

机译：蠕变曲线修正θ方程;蠕变生活； L-M参数法;

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Application of modified θ projection concept to predict creep curves and failure live of 12CrlMoV Steel

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