The modeling effects of constituents and dispersoids on the tensile ductility of aluminum alloy were studied.The results show that the tensile ductility decreases with the increase of the volume fraction and size of c...The modeling effects of constituents and dispersoids on the tensile ductility of aluminum alloy were studied.The results show that the tensile ductility decreases with the increase of the volume fraction and size of constituents.Thus,purification can improve the tensile ductility by decreasing the volume fraction of constituents(normally compositions of Fe and Si)and the first-class microcracks.The model also indicates that the tensile ductility decreases with the increase in the volume fraction of dispersoids.Decreasing the volume fraction of dispersoids along the grain boundaries by proper heat-treatment and improving the cohesion strength between dispersoids and matrix can also improve the tensile ductility by decreasing the volume fraction of the second-class microcracks.展开更多
到另一个星球来一场探险之旅会是怎样的一种体验?踢一踢火星上的红土,顺着地下蜿蜒的熔岩管匍匐前行?或者,盖一座小屋,再建一片花园?美国国家航空航天局(NASA)花费了数年时间,构想和研究火星之旅:他们利用卫星和火星漫游车收集图像和数...到另一个星球来一场探险之旅会是怎样的一种体验?踢一踢火星上的红土,顺着地下蜿蜒的熔岩管匍匐前行?或者,盖一座小屋,再建一片花园?美国国家航空航天局(NASA)花费了数年时间,构想和研究火星之旅:他们利用卫星和火星漫游车收集图像和数据,用计算机模型模拟外星环境,甚至建造模型来检验人类在地球上的奇思妙想是否可行。现在,从宇航员到孩童,人人都可以在一款以火星为场景的沉浸式虚拟现实游戏中前所未有地体验到这项研究的成果,而这款虚拟现实游戏则是由总部位于迈阿密的媒体融合试验室(Fusion Media Group Labs)开发的。展开更多
基金Project (2005CB623704) supported by National Key Fundamental Research and Development Program of China
文摘The modeling effects of constituents and dispersoids on the tensile ductility of aluminum alloy were studied.The results show that the tensile ductility decreases with the increase of the volume fraction and size of constituents.Thus,purification can improve the tensile ductility by decreasing the volume fraction of constituents(normally compositions of Fe and Si)and the first-class microcracks.The model also indicates that the tensile ductility decreases with the increase in the volume fraction of dispersoids.Decreasing the volume fraction of dispersoids along the grain boundaries by proper heat-treatment and improving the cohesion strength between dispersoids and matrix can also improve the tensile ductility by decreasing the volume fraction of the second-class microcracks.
文摘到另一个星球来一场探险之旅会是怎样的一种体验?踢一踢火星上的红土,顺着地下蜿蜒的熔岩管匍匐前行?或者,盖一座小屋,再建一片花园?美国国家航空航天局(NASA)花费了数年时间,构想和研究火星之旅:他们利用卫星和火星漫游车收集图像和数据,用计算机模型模拟外星环境,甚至建造模型来检验人类在地球上的奇思妙想是否可行。现在,从宇航员到孩童,人人都可以在一款以火星为场景的沉浸式虚拟现实游戏中前所未有地体验到这项研究的成果,而这款虚拟现实游戏则是由总部位于迈阿密的媒体融合试验室(Fusion Media Group Labs)开发的。