公开(公告)号：US5415710A

公开(公告)日：1995-05-16

申请号：US196643

申请日：1994-02-15

申请人： Haruo Shiina ,  Fumito Usuzaka ,  Yoshimasa Ohkubo ,  Shinichi Tani

发明人： Haruo Shiina ,  Fumito Usuzaka ,  Yoshimasa Ohkubo ,  Shinichi Tani

IPC分类号： B22F3/20 ,  C22C1/04 ,  C22C21/02

CPC分类号： C22C21/02 ,  Y10T428/12028

摘要： The aluminum alloy of the invention has excellent fatigue strength, high rigidity, and low thermal expansion coefficient, and is suitable for rotating components such as conrods in an internal combustion engine. The aluminum alloy is an Al-Si alloy which contains 7.0-12.0% wt. Si, 3.0-6.0 % wt. Cu, 0.20-1.0% wt. Mg, 0.30-1.5% wt. Mn, 0.40-2.0% wt. Ti+V, 0.05-0.5% wt. Zr, and the remainder Al and being inevitable impurities and which contains a dispersed intermetallic compound of average particle size of 0.5 m or less and containing Ti, V, and Zr. The alloy is preferably manufactured by the rapidly solidifying powder metallurgy process, or by the spray-forming process. By selecting a work-hardening exponent of 0.20 or less, the thread rolling workability is improved.

摘要翻译： 本发明的铝合金具有优异的疲劳强度，高刚性和低热膨胀系数，适用于内燃机等旋转部件的旋转。 铝合金是含有7.0-12.0重量％的Al-Si合金。 Si，3.0-6.0％wt。 Cu，0.20〜1.0重量％ Mg，0.30〜1.5重量％ Mn，0.40-2.0重量％ Ti + V，0.05〜0.5％ Zr，其余为Al，为不可避免的杂质，含有平均粒径为0.5μm以下且含有Ti，V，Zr的分散的金属间化合物。 该合金优选通过快速凝固的粉末冶金方法或通过喷射成形方法制造。 通过选择0.20以下的加工硬化指数，可以提高线滚动加工性。