Tensile properties and microstructure of AZ31B magnesium alloy sheet processed by repeated unidirectional bending

The mechanical properties of the AZ31B magnesium alloy sheet processed by repeated unidirectional bending (RUB) with a basal pole tilted in the rolling direction were systematically investigated at different temperatures. Compared with the as-received sheet exhibiting approximately the same average grain size, the fracture elongation increased while the proof stress decreased at room temperature. The initial texture had a significant influence on the mechanical properties at room temperature, while it showe...     

新洋港闸闸门防腐改造技术

1工程概况新洋港闸位于盐城市亭湖区黄尖镇,距黄海约15km,是控制里下河地区排水入海及挡潮的主要工程之一。本工程于1956年9月27日开工,1957年5月30日竣工放水。新洋港闸闸身全长200.09m,共17孔,左岸边孔为通航孔,通航孔为上下扉弧型钢闸门,净宽11.840m,上扉门高3.850m,弧面长度4.028m;下扉门     

多道次弯曲对AZ31B镁合金板材织构与性能的影响

提出了一种改善镁合金板材织构与冲压性能的新方法,即单向多道次弯曲工艺.研究了该工艺对AZ31B镁合金板材织构以及成形性能的影响,分析了单向多道次弯曲前后各种状态板材的显微组织、力学性能以及杯凸值.结果表明,多道次弯曲改善了冷轧态AZ31B镁合金板材中不利于对后续塑性加工的(0002)基面织构,能够较好地改善AZ31B镁合金板材的力学性能和冲压性能.