Mechanical performance of heat treated 319 alloys as a function of alloying and aging parameters

Alkahtani, Saleh A.

doi:10.1016/j.matdes.2012.04.034

Cited by 23 publications

(11 citation statements)

References 10 publications

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“…Heat-treatable Al-Si-Cu cast alloys have been widely used in the automotive and aerospace industries for the fabrication of engine blocks and cylinder heads because of their good castability and high strength-to-weight ratio [1][2][3]. When the components are in service, the working temperature can reach elevated values (250-350C).…”

Section: Introductionmentioning

confidence: 99%

Evolution of dispersoids and their effects on elevated-temperature strength and creep resistance in Al-Si-Cu 319 cast alloys with Mn and Mo additions

Liu

Chen

2020

Materials Science and Engineering: A

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Section: Introductionmentioning

confidence: 99%

Evolution of dispersoids and their effects on elevated-temperature strength and creep resistance in Al-Si-Cu 319 cast alloys with Mn and Mo additions

Liu

Chen

2020

Materials Science and Engineering: A

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“…Han [4] reports, that AlSi7Cu3,5 alloy requires solutioning at 490 o C during 8 hours to obtain high, uniform concentration of Cu in the solution, while in case of Mg additive only 4 hours are enough. Increase of Mg contents to 0,45 % facilitates the heat treatment, but in case of the alloys modified with Sr, its contents on the level of 0,45% has a negative effect on ductility due to interaction of Mg-Sr [12] (optimal combination of Mg and Sr contents is reported in the study [12] and amounts to 0,3% Mg at 150 ppm Sr). Hardness of the 319 alloy with 0,3 % additive of Mg rapidly increases during 2 hours together with increase of the temperature to 180 o C (in case of the 319 alloy without additive of Mg it is temperature 220 o C), and next the hardness decreases as the temperature increases [13].…”

Section: Introductionmentioning

confidence: 96%

Effect of Shortened Heat Treatment on the Hardness and Microstructure of 320.0 Aluminium Alloy

Pezda¹

2014

Archives of Foundry Engineering

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Improvement of Al-Si alloys properties in scope of classic method is connected with change of Si precipitations morphology through: using modification of the alloy, maintaining suitable temperature of overheating and pouring process, as well as perfection of heat treatment methods. Growing requirements of the market make it necessary to search after such procedures, which would quickly deliver positive results with simultaneous consideration of economic aspects. Presented in the paper shortened heat treatment with soaking of the alloy at temperature near temperature of solidus could be assumed as the method in the above mentioned understanding of the problem. Such treatment consists in soaking of the alloy to temperature of solutioning, keeping in such temperature, and next, quick quenching in water (20 °C) followed by artificial ageing. Temperature ranges of solutioning and ageing treatments implemented in the adopted testing plan were based on analysis of recorded curves from the ATD method. Obtained results relate to dependencies and spatial diagrams describing effect of parameters of the solutioning and ageing treatments on HB hardness of the investigated alloy and change of its microstructure. Performed shortened heat treatment results in precipitation hardening of the investigated 320.0 alloy, what according to expectations produces increased hardness of the material.

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“…Ageing of the alloy at temperatures above 200 o C [14] results in gradual, permanent decrease of the strength up to 50 MPa, at 400 o C and slight increase of plasticity of the material (elongation 2-3%), in case of the ageing at temperature up to 300 o C [15]. In case of the ageing, none typical linear relation between temperature and time of the ageing can be observed.…”

Section: Introductionmentioning

confidence: 99%

“…In case of the ageing, none typical linear relation between temperature and time of the ageing can be observed. It can therefore, as reports author of the study [14], obtain maximal strength of the alloy, e.g. after 24 hours at temperature up to 150 o C or after 8 hours at temperature 180 o C. Sokolowski proposed in his study [16] completely different approach, namely two-stage solutioning at temperature 495 ºC during 2 hours, and next at 515ºC for 4 hours.…”

Section: Introductionmentioning

confidence: 99%

Effect of Shortened Heat Treatment on Change of the Rm Tensile Strength of the 320.0 Aluminum Alloy

Pezda¹

2015

Archives of Foundry Engineering

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Mechanical and technological properties of castings made from 3xx.x alloys depend mainly on properly performed process of melting and casting, structure of a casting and mould, as well as possible heat treatment. Precipitation processes occurring during the heat treatment of the silumins containing additives of Cu and/or Mg have effect on improvement of mechanical properties of the material, while choice of parameters of solutioning and ageing treatments belongs to objectives of research work performed by a number of authors. Shortened heat treatment, which is presented in the paper assures suitable mechanical properties (Rm), and simultaneously doesn’t cause any increase of production costs of a given component due to long lasting operations of the solutioning and ageing. Results of the research concern effects of the solutioning and ageing parameters on the Rm tensile strength presented in form of the second degree polynomial and illustrated in spatial diagrams. Performed shortened heat treatment results in considerable increase of the Rm tensile strength of the 320.0 alloy as early as after 1 hour of the solutioning and 2 hours of the ageing performed in suitable.

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Mechanical performance of heat treated 319 alloys as a function of alloying and aging parameters

Cited by 23 publications

References 10 publications

Evolution of dispersoids and their effects on elevated-temperature strength and creep resistance in Al-Si-Cu 319 cast alloys with Mn and Mo additions

Evolution of dispersoids and their effects on elevated-temperature strength and creep resistance in Al-Si-Cu 319 cast alloys with Mn and Mo additions

Effect of Shortened Heat Treatment on the Hardness and Microstructure of 320.0 Aluminium Alloy

Effect of Shortened Heat Treatment on Change of the Rm Tensile Strength of the 320.0 Aluminum Alloy

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