宇航材料工艺2012，Vol.42Issue(6)：34-38,5.
Al-Mg-Sc和Al-Mg-Er合金的组织与性能
Microstructure and Properties of Al-Mg-Sc and Al-Mg-Er Alloys
摘要
Abstract
Two Al-Mg alloys plate with 0. 10wt% Sc and 0. 25wt% Er are prepared by casting-rolling-annealing technology. The variation of tensile properties, corrosion properties and microstructure of the two alloys at different treated condition was studied. The results show that the first, during annealing two alloys have same variation rule of microstructure and properties, i. e. with the increase of annealing temperature, the strength decrease but the ductility increase. At 350℃/h annealing the alloy with 0. 10wt% Sc shows strong annealing softing-resistent ability, but the alloy with Er become soft when the annealing temperature is higher than 280℃ ; at 300℃/1 h annealing condition, the tensile strength,yield strength and elongation of the alloy with 0. 10wt% Sc and 0. 25wt% Er are 424 MPa,314 MPa,18.3% and 350 MPa,177 MPa,29. 1% , respectively. Meanwhile, the exfoliation corrosion resistance of the two alloys show the same variation rule, i. e. at 200℃/1 h annealing the exfoliation corrosion resistance of the two alloys is the lest, then with increase of annealing temperature, the resistance increase. After 280℃ annealing for an hour,two alloys can get excellent exfoliation corrosion resistance. Compared with 5B70 alloy, tensile properties, corrosion properties and annealing softing-resistent ability of the alloy with 0. 25wt% Sc is similar to 5B70 alloy, but its manufacture cost decreased, which shows good developing foresight on space vehicle.关键词
Al-Mg/Sc/Er/Zr/5B70/5A06/拉伸性能/剥落腐蚀/抗退火软化能力Key words
Al-Mg/Sc/Er/ 5B70/5A06/Tensile property/Exfoliation corrosion/Annealing softing-resistent a-bility引用本文复制引用
傅乐,雷学锋,尹志民,黄继武..Al-Mg-Sc和Al-Mg-Er合金的组织与性能[J].宇航材料工艺,2012,42(6):34-38,5.基金项目
国家重点基础研究发展计划资助项目(2012CB619503) （2012CB619503）
