Effects of solution treatment on microstructure and mechanical properties of powder thixoforming 6061 aluminum alloy

Zhang, X.Z.; Chen, Tijun; Chen, Y.S.; Wang, Y.J.; Qin, He

doi:10.1016/j.msea.2016.03.060

Cited by 27 publications

(14 citation statements)

References 26 publications

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“…Besides, as an extension of the previous study (i.e., Ref. 14 ), this work would greatly facilitate the systematic understanding on the solution treatment behaviors of PTF materials. In this paper, a comparison study with permanent mold cast (PMC) 6061 alloy that had been widely investigated was conducted in order to elucidate the characteristics of PTF technique during solution treatment.…”

Section: Introductionmentioning

confidence: 71%

“…A preliminary investigation revealed that the PTF-6061 and PMC-6061 alloys achieved the best comprehensive mechanical properties after being solutionized at 535ºC for 3 and 6 h, respectively 14 . Therefore, the respective solution times of 3 and 6 h for the PTF alloy and the PMC alloy were employed in this paper so as to get the optimal solution temperature.…”

Section: Solution Treatmentmentioning

confidence: 99%

“…EDS analysis showed that this phase was rich in Al, Fe and Si elements (Fig.3b). Combined with the X-ray diffraction pattern from a preliminary study 14 , it should be the AlFeSi phase which was highly thermal stable. This phase should exist in the PTF-6061 alloy regardless of solution treatment.…”

Section: Influence Of Solution Temperature On Microstructurementioning

confidence: 99%

“…And the influences of heat treatment on the matrix alloy need to be verified in advance in effort to have a better understanding of its influence on corresponding AMCs. Unfortunately, only a few works to date involved the heat treatment behaviors of PTF materials [14][15][16] . A preliminary investigation on the solution time has shown a remarkable improvement in the tensile properties of the PTF-6061 alloy after being solutionized at 535ºC for 3 h 14 .…”

Section: Introductionmentioning

confidence: 99%

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Solution Treatment Behaviors of 6061 Aluminum Alloy Prepared by Powder Thixoforming

Zhang

Chen

2018

Mat. Res.

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Powder thixoforming (PTF) was a promising processing technology that can be used to fabricate high strength particle reinforced aluminum matrix composites, and a pioneer 6061 matrix alloy was fabricated utilizing PTF to investigate its solution treatment behaviors. A comparison study with traditional permanent mold cast (PMC) 6061 alloy disclosed that PTF alloy showed significantly reduced pore amount with only 0.16% (3.50% for PMC alloy). During solution treatment, PTF alloy displayed a much quicker solutionization progress than PMC alloy because of coarse eutectic phases and primary dendrites in latter alloy, its peak values of 14.5%, 241 MPa and 195 MPa in elongation, ultimate tensile strength and yield strength were achieved at 560ºC, an enhancement of 81.3%, 33.9% and 97.0%, respectively, compared with as-fabricated alloy. The dissolution of eutectic phases plays a dominative role in the growth of the primary α phases and secondarily primary α phases within 535ºC. However, the coarsening after 535ºC is subject to a mixture model involving atom diffusion along grain boundaries and through the crystal lattice. The superior tensile strengths of PTF alloy than PMC alloy resulted from decreased grain size, enhanced solid solution strengthening, reduced porosities and decreased harmful effect of insoluble phases in PTF alloy.

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Section: Introductionmentioning

confidence: 71%

Section: Solution Treatmentmentioning

confidence: 99%

Section: Influence Of Solution Temperature On Microstructurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Solution Treatment Behaviors of 6061 Aluminum Alloy Prepared by Powder Thixoforming

Zhang

Chen

2018

Mat. Res.

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“…However, its elongation decreases to 5.3%, a reduction of 51.8% in comparison with the matrix alloy. Since 6061 aluminum alloy can be heat-treated so as to further improve its properties 22 , it can be expected that higher performance would be achieved after the 10vol.%SiC p /6061 Al composite is appropriately heat-treated. From Table 2, it can be found that as the reheating time varies, the highest values of UTS and elongation are 199 MPa and 6.2%, respectively, at the time of 90 min.…”

Section: Effects Of Reheating Time On Microstructurementioning

confidence: 99%

Effects of Processing Parameters on Microstructure and Mechanical Properties of Powder-Thixoforged SiC p /6061 Al Composite

et al. 2017

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A novel processing technology for the fabrication of particle reinforced metal matrix composites, powder thixoforming (PTF), was proposed and 6061 Al-based composites reinforced with 10% volume fractions of SiC particles (SiC p ) were fabricated. The effects of processing parameters, such as reheating time, mould temperature and reheating temperature, on its microstructure and mechanical properties were investigated. The results indicated that all the three processing parameters exerted a significant influence on the microstructure and mechanical properties. The behavior of SiC p changes with the processing parameters. The best comprehensive mechanical properties with an ultimate tensile strength (UTS) of 228 MPa, elongation of 5.3% and a Vickers hardness of 66.4 HV are obtained when the composite is thixoforged under the reheating temperature of 660 0C for 90 min and the mould temperature of 250 0C.

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An investigation of semisolid Al7075 feedstock billet produced by a gas-assisted direct thermal method

Razak

Ahmad

Rashidi

et al. 2021

Int J Adv Manuf Technol

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Effects of solution treatment on microstructure and mechanical properties of powder thixoforming 6061 aluminum alloy

Cited by 27 publications

References 26 publications

Solution Treatment Behaviors of 6061 Aluminum Alloy Prepared by Powder Thixoforming

Solution Treatment Behaviors of 6061 Aluminum Alloy Prepared by Powder Thixoforming

Effects of Processing Parameters on Microstructure and Mechanical Properties of Powder-Thixoforged SiC p /6061 Al Composite

An investigation of semisolid Al7075 feedstock billet produced by a gas-assisted direct thermal method

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