Creep Testing and Finite Element Modelling of TIG Butt-Welded Inco718 Sheets at 620°C
Creep Testing and Finite Element Modelling of TIG Butt-Welded Inco718 Sheets at 620°C
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620°C TIG 对焊 Inco718 板材的蠕变测试和有限元建模
DOI：
10.4028/www.scientific.net/msf.440-441.439
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
W. Sun
中科院分区：
文献类型：
--
作者：
Y. Song;A. Becker;T. Hyde;W. Sun
Inco718薄板对接焊接时，由于焊接过程中存在的变形和焊道角引起的应力集中，其蠕变行为是复杂的。本文对Inco718焊接试件进行了蠕变试验研究和有限元分析。在弹塑性和蠕变有限元分析的基础上，提出了一种估算Inco718焊接板蠕变断裂寿命的方法。预测的Inco718焊接板的蠕变断裂寿命与实验的蠕变断裂寿命有较好的相关性。
Creep behaviour of butt-welded thin Inco718 sheets is complex due to the presence of distortions during the welding process and the stress concentration caused by the weld bead fillet. This paper presents an experimental study and finite element analysis of creep of welded Inco718 specimens. Based on the elasto-plastic and creep finite element analyses, a creep rupture life estimation method for Inco718 welded sheets is proposed. The predicted creep rupture life of Inco718 welded sheets correlates reasonably well with the experimental creep rupture life.