Application of phase shifting interferometric microscopy to studies of the behaviour of coarse intermetallic particles in 6056 aluminium alloy

Blanc, Cécile; Roques, Y.; Mankowski, Georges

doi:10.1016/s0010-938x(98)00039-0

Cited by 29 publications

(10 citation statements)

References 9 publications

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“…Pits in Al-Mg-Si alloys often initiate on intermetallic particles. Blanc et al [28] have demonstrated using interferometry and surface observations that Mg 2 Si particles suffer preferential Mg dissolution just after a few seconds of immersion in aggressive media, in agreement with other authors [29,30]. Preferential initiation for deep corrosion was then observed at Mg 2 Si sites [28].…”

Section: Introductionsupporting

confidence: 61%

Effect of corrosion on the fatigue life and fracture mechanisms of 6101 aluminum alloy wires for car manufacturing applications

Laurino

Andrieu²,

Harouard³

et al. 2014

Materials & Design

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An innovative solution for the automotive industry is to replace the copper used for wiring harnesses with aluminum alloys, such as the aluminum-magnesium-silicon 6101 alloy. Wiring harnesses are composed of thin strand arms obtained by a wire drawing process. These strands are susceptible to exposure to a corrosive environment and fatigue solicitations simultaneously. The fatigue endurance of this alloy was studied using the stress-life approach for three metallurgical states representative of three colddrawing steps. Fatigue tests performed in corrosive media tests highlighted a strong decrease of the 6101 alloy lifetime due to fatigue-corrosion interactions and a modification of failure modes.

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Section: Introductionsupporting

confidence: 61%

Effect of corrosion on the fatigue life and fracture mechanisms of 6101 aluminum alloy wires for car manufacturing applications

Laurino

Andrieu²,

Harouard³

et al. 2014

Materials & Design

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“…However, alloying and thermomechanical treatment can generate susceptibility to pitting corrosion and intergranular corrosion 13 with corrosion often initiated on coarse intermetallic particles. Blanc et al 17 have demonstrated using interferometry and surface observations that Mg 2 Si particles suffer preferential Mg dissolution * Electrochemical Society Active Member. z E-mail: christine.blanc@ensiacet.fr after a few seconds of immersion in aggressive media, in agreement with other authors.…”

mentioning

confidence: 99%

Corrosion Behavior of 6101 Aluminum Alloy Strands for Automotive Wires

Laurino

Andrieu

Harouard³

et al. 2013

J. Electrochem. Soc.

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International audienceMicrostructural states produced by each step of the manufacturing process leading to the production of automotive strand arms in 6101 aluminum alloy (AA6101) for wiring harnesses were investigated in relation to their corrosion behavior in NaCl solution. The observed corrosion morphology,i.e., pitting corrosion or intergranular corrosion, was strongly dependent on the precipitation state, i.e., mainly the presence of intergranular Mg2Si precipitates. A ‘grain size – corrosion resistance’ relationship was also evidenced with an ennoblement of the corrosion potential for wires heavily cold drawn, which were characterized by a nanometric grain size. Dislocation density as well as the homogeneity of alloying element distribution were also found to be relevant parameters for explaining the electrochemical behavior of each microstructural state. Plastic deformation and recrystallization phenomena occurring during the manufacturing process were found to be associated with redistribution of alloying elements, which impeded the formation of intergranular Mg2Si precipitates. Therefore, in the present study, the cold drawing process was found to increase the intergranular corrosion resistance of AA6101

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“…It should also be noted that the occurrence of variable amounts of oxygen in the EDS spectrum for Mg 2 Si phase was noted. It has been mentioned in the literature that Mg 2 Si phase decomposes in water[18], and it was found that Mg 2 Si particles might begin to dissolve during water polishing[19]. The reason why it decomposes or dissolves in water may be explained by the following reaction[20]:Mg 2 Si + 4H 2 OSiH 4 (g) + 2Mg(OH) 2 And the following reactions may further occur under certain conditions: Mg(OH) 2 MgO + H 2 O SiH 4 + 2O 2 SiO 2 + 2H 2 O Therefore, Mg 2 Si may be dissolved during water polishing.…”

mentioning

confidence: 99%

Solution strengthening and age hardening capability of Al–Mg–Mn alloys with small additions of Cu

Zhu

Starink

2008

Materials Science and Engineering: A

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Nine Al-(1-3)Mg-(0-0.4)Cu-0.15Si-0.25Mn (in wt%) alloys with potential applications in both packaging and automotive industries have been investigated. Tensile testing showed that solution strengthening is in good approximation linearly proportional to the Mg content. Mechanical testing and microstructural examinations of aged samples indicate that Mg 2 Si phase precipitates contribute to age hardening of Cu-free alloys, whilst both Mg 2 Si phase and S (Al 2 CuMg) phases contribute to that of Cu-containing alloys. The age hardening capability is critically influenced by solution treatment temperature: increasing the solution treatment temperature from 500 to 550ºC results in a marked increase in rate of hardening for Cu containing alloys and solution treatment at about 550ºC or higher is needed to allow Mg 2 Si phase precipitation during ageing in Cu-free alloys with Mg content of about 2% or higher.

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Application of phase shifting interferometric microscopy to studies of the behaviour of coarse intermetallic particles in 6056 aluminium alloy

Cited by 29 publications

References 9 publications

Effect of corrosion on the fatigue life and fracture mechanisms of 6101 aluminum alloy wires for car manufacturing applications

Effect of corrosion on the fatigue life and fracture mechanisms of 6101 aluminum alloy wires for car manufacturing applications

Corrosion Behavior of 6101 Aluminum Alloy Strands for Automotive Wires

Solution strengthening and age hardening capability of Al–Mg–Mn alloys with small additions of Cu

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