$Effect of aging treatment on the microstructure, fracture toughness and fracture behavior of the extruded Mg-7Gd-2Y–1Zn-0.5Zr alloy$

Effect of aging treatment on the microstructure, fracture toughness and fracture behavior of the extruded Mg-7Gd-2Y–1Zn-0.5Zr alloy

A commercial scale Mg-7Gd-2Y–1Zn-0.5Zr alloy extrusion rod with synergetic high yield strength of 350 MPa and fracture toughness KIC of 22.4 MPa m1/2 was fabricated by direct-chill casting, hot extrusion and subsequent aging treatment at 200 °C for 108 h. The microstructures and mechanical propertie...

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Veröffentlicht in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2022-08, Vol.849, p.143514, Article 143514
Hauptverfasser:	Ji, Z.K., Qiao, X.G., Hu, C.Y., Yuan, L., Cong, F.G., Wang, G.J., Xie, W.C., Zheng, M.Y.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aging (metallurgy) Alloys Bimodal microstructure Chill casting Direct chill casting Ductile fracture Energy dissipation Fracture mechanics Fracture surfaces Fracture toughness Grain boundaries Heat treating Hot extrusion LPSO phase Magnesium base alloys Mechanical properties Mg-Gd-Y-Zn-Zr alloy Microcracks Microstructural analysis Microstructure Nanoprecipitates
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