发明名称 |
Powder metal compositions for wear and temperature resistance applications and method of producing same |
摘要 |
A powder metal composition for high wear and temperature applications is made by atomizing a melted iron based alloy including 3.0 to 7.0 wt. % carbon; 10.0 to 25.0 wt. % chromium; 1.0 to 5.0 wt. % tungsten; 3.5 to 7.0 wt. % vanadium; 1.0 to 5.0 wt. % molybdenum; not greater than 0.5 wt. % oxygen; and at least 40.0 wt. % iron. The high carbon content reduces the solubility of oxygen in the melt and thus lowers the oxygen content to a level below which would cause the carbide-forming elements to oxidize during atomization. The powder metal composition includes metal carbides in an amount of at least 15 vol. %. The microhardness of the powder metal composition increases with increasing amounts of carbon and is typically about 800 to 1,500 Hv50. |
申请公布号 |
US9162285(B2) |
申请公布日期 |
2015.10.20 |
申请号 |
US201313837549 |
申请日期 |
2013.03.15 |
申请人 |
Federal-Mogul Corporation;La Corporation De L'Ecole Polytechnique De Montreal |
发明人 |
Christopherson, Jr. Denis B.;Farthing Leslie John;Schoenwetter Todd;L'Esperance Gilles;Beaulieu Philippe |
分类号 |
C22C1/05;B22F1/00;B22F9/08;C22C33/02;C22C37/06;B22F3/12;C22C1/02;C22C29/02;C22C29/08;C22C38/36 |
主分类号 |
C22C1/05 |
代理机构 |
Dickinson Wright, PLLC |
代理人 |
Stearns Robert L.;Dickinson Wright, PLLC |
主权项 |
1. A powder metal composition, consisting of:
3.8 wt. % carbon, 13.0 wt. % chromium, 2.5 wt. % tungsten, 6.0 wt. % vanadium, 1.5 wt. % molybdenum, 0.2 wt. % oxygen, 70.0 to 80.0 wt. % iron, and impurities in an amount not greater than 2.0 wt. %, based on the total weight of the powder metal composition. |
地址 |
Southfield MI US |