Microstructure and Mechanical Behaviors of the New LAZ1151 Mg-Li Alloy
This research studies a brand new Magnesium Lithium Alloy, LAZ1151, with trace Sc additions. The mechanical properties and microstructures of the as-cast and alloys after three and six month aging were observed and analyzed. Microstructure and XRD confirms the existence of α phase precipitates (Mg rich) in both as-cast and aging specimens of the alloy. Grain growth was observed in the alloy after room temperature aging. The tensile strength of the as-cast LAZ1151 is 147 MPa; the value is decreased to 135 MPa after six month aging, showing typical room temperature softening. Strengthening via the use of cold rolling was tried; a maximum tensile strength of 180 MPa was achieved after 90% rolling reduction, which is mainly due to strain hardening.
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
C. W. Cheng et al., "Microstructure and Mechanical Behaviors of the New LAZ1151 Mg-Li Alloy", Advanced Materials Research, Vols. 239-242, pp. 1326-1330, 2011