Effects of Aging Treatment on Laser-Welded Mg-Rare Earth Alloy NZ30K | Zendy

Jun Dai | Zendy; Li Yang | Zendy; Lili Li | Zendy; Guolin Guo | Zendy; Lanzhong Guo | Zendy

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Effects of Aging Treatment on Laser-Welded Mg-Rare Earth Alloy NZ30K

Author(s) -

Jun Dai,

Li Yang,

Lili Li,

Guolin Guo,

Lanzhong Guo

Publication year - 2013

Publication title -

advances in materials science and engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.356

H-Index - 42

eISSN - 1687-8442

pISSN - 1687-8434

DOI - 10.1155/2013/219347

Subject(s) - materials science , precipitation , alloy , welding , supersaturation , ultimate tensile strength , rare earth , magnesium alloy , transmission electron microscopy , laser , metallurgy , magnesium , composite material , optics , nanotechnology , thermodynamics , physics , meteorology

Magnesium-rare earth alloys have received extensive attention due to their attractive mechanical properties resulting from high density of precipitation. The precipitation sequence in laser-welded Mg-3Nd-0.2Zn-0.4Zr (NZ30K) alloy during aging treatment at 200°C and 225°C has been investigated using transmission electron microscopy (TEM). The results indicate that the tensile strength of laser-welded NZ30K can be improved significantly after aging treatment at 200°C for 8 h. It is found that the precipitation in laser-welded NZ30K alloy follows the sequence of supersaturated solid solution → β′′(DO19) → β′(fcc)

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