Microstructure and Hardness of Friction Welded SSM 356 Aluminium Alloy

Boonseng, K.; Meengam, Chaiyoot; Chainarong, Suppachai; Muangjunburee, Prapas

doi:10.4028/www.scientific.net/amr.887-888.1273

Cited by 2 publications

(2 citation statements)

References 8 publications

(7 reference statements)

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“…However, this RFW method also has some limits for welding. For instance, welding workpiece with a complex shape can be very difficult, or workpiece length become shortened after welding [3]. These usually occur when welding workpiece at low melting point because the heat input from the welding place is not sufficient and the upset pressure while welding is not high enough.…”

Section: Introductionmentioning

confidence: 99%

Rotary Friction Welding of Dissimilar Joints between SSM356 and SSM6061 Aluminium Alloys Produced by GISS

Chainarong¹,

Meengam²,

Tehyo³

2017

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Abstract. The objective of research to investigate the parameters, microstructure and mechanical properties of butt joint SSM356 with SSM6061 aluminum alloy by using RFW processes. The main parameters such as rotation speeds are 1550, 1700 and 1850 rpm, burn-off length are 2, 2.5 and 3 mm respectively. For experiment found that, both materials have weld ability to get along well though it has a different chemical composition, the changes in welded metals microstructures occurs deformation leads to smaller particle size. The average dimensions of Mg2Si particles were measured at 0.998 µm long and 1.021 µm wide when one of the workpiece was rotated at 1850 rpm with 2.5 mm burn-off length. The maximum average tensile strength is 87.24 MPa, efficiency of the weld joints is 51.89 percent compared with the base metal of SSM356 aluminum alloys, (base metal is 168.12 MPa) and efficiency of the weld joints is 68.45 percent compared with the base metal of SSM6061 aluminum alloys (base metal is 127.44 MPa). Furthermore, small particles distributed in the weld metal promotes increasing hardness property up to 65.56 HV in the weld metal as compared with those of the base metals.

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Section: Introductionmentioning

confidence: 99%

Rotary Friction Welding of Dissimilar Joints between SSM356 and SSM6061 Aluminium Alloys Produced by GISS

Chainarong¹,

Meengam²,

Tehyo³

2017

Self Cite

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“…On the other hand, the non-fusion welding or solid state welding is such that heat at the welding line has a temperature below the melting point of the material [1]. There are many methods of solid state welding such as friction stir welding [2], friction welding [3] and diffusion bonding [4] etc. Solid state welding results in a specimen without gas porosities after welding, [5] however, aluminium welding has the possibility of this problem occurring, especially, in the automotive industry which uses lightweight materials in the production of automobile parts.…”

Section: Introductionmentioning

confidence: 99%

Determination of Optimal Parameters for Diffusion Bonding of Semi-Solid Casting Aluminium Alloy by Response Surface Methodology

Kaewploy

Meengam

2015

MATEC Web of Conferences

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Abstract. Liquid state welding techniques available are prone to gas porosity problems. To avoid this solid state bonding is usually an alternative of preference. Among solid state bonding techniques, diffusion bonding is often employed in aluminium alloy automotive parts welding in order to enhance their mechanical properties. However, there has been no standard procedure nor has there been any definitive criterion for judicious welding parameters setting. It is thus a matter of importance to find the set of optimal parameters for effective diffusion bonding. This work proposes the use of response surface methodology in determining such a set of optimal parameters. Response surface methodology is more efficient in dealing with complex process compared with other techniques available. There are two variations of response surface methodology. The one adopted in this work is the central composite design approach. This is because when the initial upper and lower bounds of the desired parameters are exceeded the central composite design approach is still capable of yielding the optimal values of the parameters that appear to be out of the initially preset range. Results from the experiments show that the pressing pressure and the holding time affect the tensile strength of jointing. The data obtained from the experiment fits well to a quadratic equation with high coefficient of determination (R 2 = 94.21%). It is found that the optimal parameters in the process of jointing semi-solid casting aluminium alloy by using diffusion bonding are the pressing pressure of 2.06 MPa and 214 minutes of the holding time in order to achieve the highest tensile strength of 142.65 MPa.

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Microstructure and Hardness of Friction Welded SSM 356 Aluminium Alloy

Cited by 2 publications

References 8 publications

Rotary Friction Welding of Dissimilar Joints between SSM356 and SSM6061 Aluminium Alloys Produced by GISS

Rotary Friction Welding of Dissimilar Joints between SSM356 and SSM6061 Aluminium Alloys Produced by GISS

Determination of Optimal Parameters for Diffusion Bonding of Semi-Solid Casting Aluminium Alloy by Response Surface Methodology

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