The effect of filler metal thickness on residual stress and creep for stainless-steel plate-fin structure

Wenchun Jiang, Jianming Gong, Hu Chen, S. T. Tu

科研成果: 期刊稿件文章同行评审

57 引用 (Scopus)

摘要

Stainless-steel plate-fin heat exchanger (PFHE) has been used as a high-temperature recuperator in microturbine for its excellent qualities in compact structure, high-temperature and pressure resistance. Plate-fin structure, as the core of PFHE, is fabricated by vacuum brazing. The main component fins and the parting sheets are joined by fusion of a brazing alloy cladded to the surface of parting sheets. Owing to the material mismatching between the filler metal and the base metal, residual stresses can arise and decrease the structure strength greatly. The recuperator serves at high temperature and the creep would happen. The thickness of the filler metal plays an important role in the joint strength. Hence this paper presented a finite element (FE) analysis of the brazed residual stresses and creep for a counterflow stainless-steel plate-fin structure. The effect of the filler metal thickness on residual stress and creep was investigated, which provides a reference for strength design.

源语言英语
页(从-至)569-574
页数6
期刊International Journal of Pressure Vessels and Piping
85
8
DOI
出版状态已出版 - 8月 2008

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