Powder metal alloy composition for sintered powder metal insert for aluminum casting
US11794240B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 2018 |
| Grant date | Oct 24, 2023 |
| Priority date | — |
| Expiry date | Oct 26, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/18
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A powder metal alloy composition is used in the production of a sintered powder metal insert for casting into an aluminum casting. The powder metal alloy composition includes an iron powder metal base, copper such that the copper is 3.5 weight percent or more of the powder metal alloy composition, and carbon in an amount of 0.1 to 1.0 weight percent of the powder metal alloy composition. Upon compacting and sintering the powder metal alloy composition to form the sintered powder metal insert, the sintered powder metal insert has a copper gradient that provides a higher concentration of copper on the surface of the sintered powder metal insert than in a center of the grains of the sintered powder metal insert. The higher concentration of copper at the surface of the insert enables a strong metallurgical bond to be formed with the aluminum casting during casting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.