【摘要】 <正> 本简报报道室温强度达到σ_b≥32kgf/mm²,σ_0.2≥25kgf/mm²,δ≥10%的高强度板材镁合金。根据美国的高强度变形板材镁合金的资料表明,已投入生产的合金有AZ31A-H₂₄和ZE 10A-H₂₄。前者相当于苏联的MA_2-1,含3%Al,1%Zn;后者含1.2%Zn,0.18%RE。此外,还有试验板材合金ZK41XA-H₂₆,含4%Zn,0.5%Zr,0.6%RE.AZ31A-H₂₄及ZE10A-H₂₄合金的室温强度极限σ_b≤31.5kgf/mm²,δ<9%。另外尚有ZK60A,即苏联的BM_65-1,这一合金一般是作棒材、型材、管材和锻件,作为板材更多还原

【Abstract】 A new high strength Mg sheet alloy, Mg-（3.0—3.8）%Zn-（0.6—1.0）%Y-（0.4—0.7）%Zr, has been developed. The final heat treatment condition is T₈ condition, namely, 515—520℃ solution treated 1h, water quenched+15% cold work+200℃ 24h. Its room temperature tensile properties are shown as: σ_b=33.5—34.0 or 29.0—30.0 kgf/mm²; σ_0.2=30.0—30.5 or 19.5—20kgf/mm²; δ=12—14 or 13.5—22.0% in longitudinal or transverse direction respectively. And its tensile properties below 250℃ are superior to that of both HM21XA-T₈ and AZ31B-H₂₄.更多还原