Local mechanical properties of the 6061-T6 aluminium weld using micro-traction and instrumented indentation

Ambriz, R.R.; Chicot, Didier; Benseddiq, Noureddine; Mesmacque, G.; Torre, S.D. De la

doi:10.1016/j.euromechsol.2010.12.007

Cited by 84 publications

(44 citation statements)

References 36 publications

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“…Some studies stablished that the elastic modulus obtained by the instrumented indentation corresponds to a bulk modulus (Ambriz et al, 2011;Dowling, 2013). An additional explanation of this aspect is that in the case of indentation, the elastic and plastic strain is triaxial and it involves only few grains, while in tension the strain taken for the elastic modulus calculation is uniaxial.…”

Section: Tensile and Indentationmentioning

confidence: 99%

Heat input effect on the microstructural transformation and mechanical properties in GTAW welds of a 409L ferritic stainless steel

et al. 2016

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Welds without filler metal and welds using a conventional austenitic stainless steel filler metal (ER308L) were performed to join a ferritic stainless steel with Gas Tungsten Arc Welding process (GTAW). Welding parameters were adjusted to obtain three different heat input values. Microstructure reveals the presence of coarse ferritic matrix and martensite laths in the Heat Affected Zone (HAZ). Dilution between filler and base metal was correlated with the presence of austenite, martensite and ferrite in the weld metal. Weld thermal cycles were measured to correlate the microstructural transformation in the HAZ. Microhardness measurements (maps and profiles) allow to identify the different zones of the welded joints (weld metal, HAZ, and base metal). Comparing the base metal with the weld metal and the HAZ, a hardness increment (~172 HV 0.5 to ~350 HV 0.5 and ~310 HV 0.5 , respectively) was observed, which has been attributed to the martensite formation. Tensile strength of the welded joints without filler metal increased moderately with respect to base metal. In contrast, ductility was approximately 25% higher than base metal, which provided a toughness improvement of the welded joints. RESUMEN:Efecto del calor de aporte sobre la transformación microestructural y las propiedades mecánicas en soldadura GTAW de un acero inoxidable ferrítico 409L. Se llevaron a cabo soldaduras sin material de aporte y empleando un electrodo convencional (ER308L) para unir un acero inoxidable ferrítico, empleando el proceso de soldadura de arco con electrodo de tungsteno (GTAW). Los parámetros de soldadura fueron ajustados para obtener tres valores diferentes de calor de aporte. La microestructura revela la presencia de una matriz ferrítica gruesa y placas de martensita en la Zona Afectada por el Calor (ZAC). La dilución entre el metal base y de aporte fue correlacionada con la presencia de austenita, martensita y ferrita en el metal de soldadura. Los ciclos térmicos de la soldadura fueron medidos para correlacionar la transformación microestrutural en la ZAC. Mediciones de microdureza (mapas y perfiles), permitieron identificar las diferentes zonas de las uniones soldadas (metal base, ZAC y metal de soldadura). Se observó un incremento de dureza en el metal de soldadura (~350 HV 0,5 ) y en la ZAC (~310 HV 0,5 ), en relación al metal base (~172 HV 0,5 ), que se ha atribuido a la formación de martensita. La resistencia a la tensión de las uniones soldadas sin metal de aporte aumentó ligeramente con respecto al metal base. En cambio, la ductilidad se incrementó aproximadamente un 25% en relación al material base, lo cual mejoró la tenacidad de las uniones.

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Section: Tensile and Indentationmentioning

confidence: 99%

Heat input effect on the microstructural transformation and mechanical properties in GTAW welds of a 409L ferritic stainless steel

et al. 2016

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“…Indeed, the order of magnitude of the external power is 600 W in ultrasonic welding (Matsuoka and Imai, 2009), 1700 W in friction stir-welding (Jacquin et al, 2011) and 23,000 W in friction welding (Elmer and Kautz, 1993). As for liquid state welding, the magnitude of the external power is 1300 W in laser welding (Benyounis et al, 2005), 2600 W in TIG-welding (Shakoor and Zhenggan, 2011) and 5000 W in gas metal arc welding (Ambriz et al, 2011). Even though those values may vary with the material properties, the configuration and the process parameters, this comparison underlines the very low level of external power, implemented during the new weldability test proposed here.…”

Section: Thermomechanical Analysis Based On a One-dimensional Symbolimentioning

confidence: 75%

Cold weldability of aluminium: Contribution of the mechanical loadings to the formation of metallic bonds

Siret

Tourabi

Desrayaud

2012

Journal of Materials Processing Technology

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“…Testing of microtensile specimens cut from various weld zones and microhardness measurements are the classical methods, most widely used, for obtaining the zone wise material parameters of welds [1][2][3]. Testing of microsamples is time consuming and it is difficult to cut microsamples from narrow HAZs.…”

Section: Introductionmentioning

confidence: 99%

Local zone wise elastic and plastic properties of electron beam welded Ti–6Al–4V alloy using digital image correlation technique: A comparative study between uniform stress and virtual fields method

Saranath

Ramji

2015

Optics and Lasers in Engineering

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Local mechanical properties of the 6061-T6 aluminium weld using micro-traction and instrumented indentation

Cited by 84 publications

References 36 publications

Heat input effect on the microstructural transformation and mechanical properties in GTAW welds of a 409L ferritic stainless steel

Heat input effect on the microstructural transformation and mechanical properties in GTAW welds of a 409L ferritic stainless steel

Cold weldability of aluminium: Contribution of the mechanical loadings to the formation of metallic bonds

Local zone wise elastic and plastic properties of electron beam welded Ti–6Al–4V alloy using digital image correlation technique: A comparative study between uniform stress and virtual fields method

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