The invention provides a hollow airfoil which is extruded from discontinuously reinforced aluminum (DRA). Preferably the DRA include silicon carbide particles as a reinforcing element. Preferably the silicon carbide is present in an amount between 10-30 volume percent, most preferably 17.5 volume percent. The matrix material is preferably a 6000 aluminium alloy. <IMAGE>
申请公布号
EP0816637(A3)
申请公布日期
1998.07.01
申请号
EP19970304669
申请日期
1997.06.27
申请人
UNITED TECHNOLOGIES CORPORATION
发明人
WATSON, THOMAS J.;NARDONE, VINCENT C.;VISOSKIS, JOHN A.;ANDERSON, STUART A.