Effect of Zr, V and Ti on hot compression behavior of the Al–Si cast alloy for powertrain applications

Microstructure and mechanical properties of Al–Si cast alloy with additions of Zr–V–Ti

“…In general, the A380 alloy demonstrates a comparatively higher strain hardening exponent and strength coefficient between 0. 26 550 MPa, and 0.18 and 397 MPa at room and 200°C temperature, respectively. Since the strain hardening exponent indicates the materials resistance to plastic deformation, the A380 alloy has lower ductility than the experimental alloy.…”

“…The role of transition metals in cast Al alloys has been a subject of many studies [6,[20][21][22][23][24][25][26][27][28]. It was reported that minor additions of Zr in aluminum alloys improve the tensile strength and wear resistance.…”

Interaction between molybdenum and manganese to form effective dispersoids in an Al–Si–Cu–Mg alloy and their influence on creep resistance

“…This cyclic loading results in cyclic plastic damage accumulation and crack initiation; the crack formation, subcritical growth of the crack and its eventual failure is referred to as thermal fatigue. Because of the metallurgical instability of the age hardened alloys [6][7][8][9], the strength drops dramatically with increasing temperature (above 250 1C) and the creep resistance is usually poor because of the Ostwald ripening [10] of the age-hardening precipitates [11]. Research has been carried out to develop new alloys with higher thermal stability in the critical temperature range of 250-300 1C to improve the performance of the engines.…”

“…Most of the research efforts to develop thermally stable Al alloys are directed towards the addition of alloying elements such as Ni, V, Mn, Cr, Sc and Zr [6][7][8][11][12][13][14][15][16] with limited solid solubility and low diffusivity in Al to form precipitates that do not coarsen at elevated temperatures (dispersoids) and impart high temperature strength. Here, thermal stability refers to slow kinetics of coarsening at service temperatures.…”

Microstructures and Properties Evolution of Al-Cu-Mn Alloy with Addition of Vanadium

“…The common added alloying elements in Al-Cu alloys are Mg, Si, and Zn, which are effective to change the precipitation behavior and thereby improve the mechanical properties [6][7][8][9][10]. In general, the effects of the micro-alloying elements on the precipitation behavior-such as rare earth metals, Zr, V, Sc, Ti, Mn-can be classified into two types: one promotes the precipitation of the hardening particles and the other one forms new precipitates with the matrix and/or other elements [11][12][13][14][15][16].…”