Corrosion resistant metallurgical powder compositions, methods, and compacted articles

a technology of corrosion resistance and metallurgical powder, which is applied in the field of corrosion resistant metallurgical powder compositions and compacted articles, can solve the problems of insufficient improvement, inability to achieve high strength applications of some stainless steels, and increase the cost of preparing compacted articles. achieve high fatigue endurance limits, maintain ductility, and high strength
US20060285989A1Inactive Publication Date: 2006-12-21HOEGANNES
14 Cites 26 Cited by

Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
HOEGANNES
Publication Date
2006-12-21
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Provided are corrosion resistant metallurgical powder compositions, corrosion resistant compacted articles prepared from metallurgical powder compositions, and methods of preparing the same. Corrosion resistant metallurgical powder compositions include as a major component, an iron-based powder and, as a minor component, alloy additives that include chromium, and carbon. Upon compaction and sintering, the iron-based powder and alloy additives form a dual phase alloy system. The dual phase alloy system is denoted by an admixed martensite and ferrite microstructure. This unique microstructure results in beneficial physical properties, such as for example, high strength, hardness, and ductility, impact energy, and fatigue endurance, while maintaining resistance to corrosion.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] This application claims the priority benefit of U.S. Provisional Application Ser. No. 60 / 692,387, filed Jun. 20, 2005, which is herein incorporated by reference in its entirety.FIELD OF THE INVENTION

[0002] The present invention relates to metallurgical powder compositions, compacted articles prepared from metallurgical powder compositions, and methods of making the same. More particularly, the present invention is directed to corrosion resistant metallurgical powder compositions, corrosion resistant compacted articles prepared from metallurgical powder compositions, and methods of preparing the same. BACKGROUND OF THE INVENTION

[0003] Iron-based particles have long been used as a base material in the manufacture of structural components by powder metallurgical techniques. These techniques involve first compacting iron-based particles in a die under high pressures in order to produce an article having a desired shape. After the compacting step, the structural component may un...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More