Accelerated artificial ageing regimes of commercial aluminium alloys. II: Al–Cu, Al–Zn–Mg–(Cu), Al–Mg–Si–(Cu) alloys

Ber, L. B.

doi:10.1016/s0921-5093(99)00661-9

Cited by 54 publications

(8 citation statements)

References 1 publication

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“…8, the pre-weld solution treatment weakened the diffraction peaks of the second phase Al 2 Cu in HAZ, which demonstrated that the pre-weld solution treatment relieved the overaging degree by decreasing the content of overaging phase h (Al 2 Cu) and keeping more precipitates exist in the form of h9 phase. 22,23 The hardness distribution curves of samples under four kinds of different conditions of pre-and post-weld heat treatment are shown in Fig. 9.…”

Section: Effect Of Heat Treatment On Microstructure Of Hazmentioning

confidence: 99%

Effect of different pre- and post-weld heat treatments on microstructures and mechanical properties of variable polarity TIG welded AA2219 joints

Lin

Wang

et al. 2016

Science and Technology of Welding and Joining

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The microstructures and mechanical properties of 2219 aluminium alloy joints welded by variable polarity TIG welding in four kinds of different heat treatment conditions, namely, with/without pre-/ post-weld heat treatment, were analysed and compared. The post-weld artificial aging treatment rendered fine dispersed precipitates (metastable h9 phase) separate out of weld metal, which made the hardness of weld metal increase by ,20%. Meanwhile, the fracture location of joints during tensile test changed from weld zone to heat affected zone (HAZ). The pre-weld solution treatment reduced the overaging degree of HAZ and a large number of h9 phase reprecipitated in HAZ after post-weld artificial aging treatment. Intermediate state welding, with pre-weld solution treatment and post-weld artificial aging treatment together, could increase 20% of the hardness of weld zone, increase 11.5% of the hardness of HAZ and increase 20.3% of the tensile strength of joint.

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Section: Effect Of Heat Treatment On Microstructure Of Hazmentioning

confidence: 99%

Effect of different pre- and post-weld heat treatments on microstructures and mechanical properties of variable polarity TIG welded AA2219 joints

Lin

Wang

et al. 2016

Science and Technology of Welding and Joining

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“…The maximum torques were measured with an engine dynamometer during the durability test, and the fuel consumption was also measured using a flowmeter. The relationship between the torque and output is given by Equation (5). The fuel consumption of the engine can be expressed as a break-specific fuel consumption (BSFC), which is the fuel consumption rate per unit output, and can be calculated by using Equation (6).…”

Section: Durability Test Results For the Enginementioning

confidence: 99%

“…Al alloys are widely used for weight reduction and mechanical improvement because they have excellent mechanical properties and casting characteristics [3,4]. To achieve such characteristics, various alloy component ratios and heat treatment methods have been standardized [5]. These standards improve the casting characteristics and mechanical characteristics of the precipitating intermetallic compound through the equilibrium state of the solid solution and eutectic reaction.…”

Section: Introductionmentioning

confidence: 99%

Optimization Studies of AC4CH Material in the Cylinder Block of a Diesel Engine Application

2020

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The reduction of the weight of the engine of a vessel or an automobile can result in improved engine efficiency and lower CO2 emissions. Therefore, this study was conducted to improve the mechanical properties of the AC4CH alloy, an alternative to cast iron for engine fabrication, through the addition of Si and Mg to aluminum. The mechanical properties of the alloy were improved through refinement of the Si structure, grain refinement, and heat treatment. In addition, the applicability of a cylinder block fabricated with the modified AC4CH alloy to a diesel engine was validated through a 300 h durability test.

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“…Accelerated artificial ageing phenomena have been discussed for the 7XXX families, and [33,34] have shown that, for Al-Zn-Mg-(Cu) alloys, the η-MgZn 2 phase and ηvolume fractions are the microstructural features that control the mechanical resistance of the alloys after the ageing treatment.…”

Section: Samplementioning

confidence: 99%

AA7050 Al Alloy Hot-Forging Process for Improved Fracture Toughness Properties

Angella

Schino

Donnini

et al. 2019

Metals

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The conventional heat-treatment standard for the industrial post hot-forging cycle of AA7050 is regulated by the AMS4333 and AMS2770N standards. An innovative method that aimed to improve toughness behavior in Al alloys has been developed and reported. The unconventional method introduces an intermediate warm working step between the solution treating and the final ageing treatment for the high resistance aluminum alloy AA7050. The results showed several benefits starting from the grain refinement to a more stable fracture toughness KIC behavior (with an appreciable higher value) without tensile property loss. A microstructural and precipitation state characterization provided elements for the initial understanding of these improvements in the macro-properties.

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Accelerated artificial ageing regimes of commercial aluminium alloys. II: Al–Cu, Al–Zn–Mg–(Cu), Al–Mg–Si–(Cu) alloys

Cited by 54 publications

References 1 publication

Effect of different pre- and post-weld heat treatments on microstructures and mechanical properties of variable polarity TIG welded AA2219 joints

Effect of different pre- and post-weld heat treatments on microstructures and mechanical properties of variable polarity TIG welded AA2219 joints

Optimization Studies of AC4CH Material in the Cylinder Block of a Diesel Engine Application

AA7050 Al Alloy Hot-Forging Process for Improved Fracture Toughness Properties

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