Application of response surface methodology for optimization of hybrid friction diffusion bonding of tube-to-tube-sheet connections in coil-wound heat exchangers

被引：8

作者：

Albaa, Diego Rafael ^{[1
,3
]}

Roos, Arne ^{[1
]}

Wimmer, Georg ^{[2
]}

Gonzalez, Arnaldo Ruben ^{[1
,4
]}

Hanke, Stefanie ^{[1
,5
]}

dos Santos, Jorge Fernandez ^{[1
]}

机构：

[1] Helmholtz Zentrum Geesthacht, Ctr Mat & Coastal Res, Mat Mech, Solid State Joining Proc, Max Planck Str 1, D-21502 Geesthacht, Germany

[2] LINDE AG, Engn Div, Carl von Linde Str 15, D-83342 Tacherting, Germany

[3] Univ Fed Rio Grande do Sul, PPGE3M, Bento Goncalves Ave 9500, BR-91501 Porto Alegre, RS, Brazil

[4] Univ Fed Rio Grande do Sul, PROMEC, Sarmento Leite St 425, BR-90950 Porto Alegre, RS, Brazil

[5] Duisburg Essen Univ, Inst Met Technol, Lotharstr 1, D-47057 Duisburg, Germany

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2019年 / 8卷 / 02期

关键词：

Solid state welding; Hybrid friction diffusion bonding; 5XXX series aluminum; Box-Behnken design; Response surface methodology; MECHANICAL-PROPERTIES; GRAIN-SIZE; ALUMINUM; MICROSTRUCTURE; PARAMETERS; ALLOY;

D O I：

10.1016/j.jmrt.2018.11.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study evaluates the application of a new solid state joining process referred to as hybrid friction diffusion bonding. Based on heat processing and pressure, accelerated diffusion joins the materials. In the present study, two aluminum alloys were welded and characterized using leak tightness tests, tensile pull out tests, and metallographic analysis. Response surface methodology was used to optimize the tensile strength of single-hole tube-sheet samples. A Box-Behnken design was selected to evaluate the relations between the important process parameters and the ultimate tensile strength response to obtain optimal welding parameters. The data were analyzed with analysis of variance and were fitted to a second-order polynomial equation. The three-dimensional response surfaces derived from the mathematical models were applied to determine several optimum input parameters conditions. Under these conditions, the experimental ultimate tensile strength value was 202 MPa, which represents 95% of the base material strength. The experimental results obtained under optimum operating conditions were in agreement with the predicted values. Axial force was found to be the most significant factor affecting the joint strength followed by rotational speed. This can be attributed to their influence on the amount of mechanical energy introduced during the process, which is the parameter that primarily determines the joint strength. (C) 2018 Brazilian Metallurgical, Materials and Mining Association. Published by Elsevier Editora Ltda.

引用

页码：1701 / 1711

页数：11

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