Title of article :
Microstructure and high tensile strength of Mg–10Gd–2Y–0.5Zr alloy by solid-state recycling
Author/Authors :
Peng، نويسنده , , Tao and Wang، نويسنده , , Qudong and Han، نويسنده , , York and Zheng، نويسنده , , Jiang and Guo، نويسنده , , Wei، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Pages :
6
From page :
715
To page :
720
Abstract :
In general, the tensile strengths of the solid-recycled Mg alloys are increased by T6 treatment after extrusion. For Mg alloy with high rare earth (RE) content, it is difficult to obtain the desired higher tensile strength compared with those extruded ones from the original ingots. In this paper, according to some characteristic of Mg-RE alloys, effect of heat treatment and extrusion temperature on the properties of the recycled Mg–10Gd–2Y–0.5Zr was studied. The results show that the aging response in the recycled specimens is similar to that in as-extruded reference samples. The deformation temperature is increased in order to inhibit Mg24(Gd,Y)5 particles precipitation and realize interfacial bonding between chips. After peak-aged treatment at 225 °C, the GW102K alloy consolidated at 450 °C exhibits excellent tensile strength. It is feasible to obtain the desired tensile properties of the recycled alloys by simultaneously promoting the precipitation of the metastable RE-containing phases and retaining the work-hardening effect during heat treatment.
Keywords :
Rare earth (RE) , Solid-state recycling , aging response , Machined chips , Interface bonding , Mg–10Gd–2Y–0.5Zr
Journal title :
MATERIALS SCIENCE & ENGINEERING: A
Serial Year :
2010
Journal title :
MATERIALS SCIENCE & ENGINEERING: A
Record number :
2167024
Link To Document :
بازگشت