Variation of age-hardening behavior of TM-addition Al–Mg–Si alloys

Precipitation behavior of dispersoids and elevated-temperature properties in Al–Si–Mg foundry alloy with Mo addition

“…One of the practical solutions to improve elevated-temperature properties of aluminum alloys is to introduce a large amount of thermally stable dispersoids via adding rare earth elements or transition elements [11,12]. In our previous study on the elevated-temperature behavior of Al-Mn-Mg 3004 alloys [13,14], it is found that the thermally stable α-Al(Fe,Mn)Si dispersoids can be formed with fine size and high volume fraction by adjusting alloying elements, such as Fe, Mn and Cu, leading to a remarkable improvement on the strength and creep resistance at 300 °C.…”

Electron microscopy studies of the age-hardening behaviors in 6005A alloy and microstructural characterizations of precipitates

“…In recent years, a number of fabrication techniques and alloying methods have been developed to research the effects on the precipitation hardening behavior and the microstructural development during artificial aging in Al-Mg-Si-Cu alloys, and further to increase the mechanical strength of alloys [2][3][4][5]. In particular, the precipitation strengthening through some metastable nano-particles precipitated from the matrix, as one of the most essential techniques, is still widely researched [6][7][8].…”

Microstructure of Small Amount of TM Added Al-Mg-Si Alloys with Two-Step Ageing

“…In our previous work, Al-0.70Mg-0.35Si-0.2Mn (at.%) alloy decreased peak hardness compared with the base alloy (Al-1.06 at.%Mg 2 Si) because it formed dispersoids of AlMnSi ternary system during ageing treatment. Consequently, amount of Si in Al matrix decreased and it resulted in weakness of agehardenability [1,2]. However, small amount of Mn added Al-Mg-Si (Mn < 0.1 at.%) alloy increased the level of peak hardness without forming dispersoids.…”