Invention Grant
US09574248B2 Method for solution hardening of a cold deformed workpiece of a passive alloy, and a member solution hardened by the method
有权
钝化合金的冷变形工件的固溶硬化方法，以及通过该方法硬化的部件溶液
- Patent Title: Method for solution hardening of a cold deformed workpiece of a passive alloy, and a member solution hardened by the method
- Patent Title (中): 钝化合金的冷变形工件的固溶硬化方法，以及通过该方法硬化的部件溶液
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Application No.: US14113720Application Date: 2012-04-27
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Publication No.: US09574248B2Publication Date: 2017-02-21
- Inventor: Thomas Lundin Christiansen , Thomas Strabo Hummelshoj , Marcel A. J. Somers
- Applicant: Thomas Lundin Christiansen , Thomas Strabo Hummelshoj , Marcel A. J. Somers
- Applicant Address: DK Lyngby
- Assignee: EXPANITE A/S
- Current Assignee: EXPANITE A/S
- Current Assignee Address: DK Lyngby
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: DK201170208 20110428
- International Application: PCT/DK2012/050139 WO 20120427
- International Announcement: WO2012/146254 WO 20120111
- Main IPC: C23C8/34
- IPC: C23C8/34 ; C21D1/06 ; C23C8/02 ; C23C8/26 ; C23C8/32 ; C23C8/80 ; C21D6/00 ; C21D9/00 ; C23C8/38 ; F16B39/22
Abstract:
The invention relates to a method for method for formation of expanded austenite and/or expanded martensite by solution hardening of a cold deformed workpiece of a passive alloy, which method comprises a first step of dissolving at least nitrogen in the workpiece at a temperature T1, which is higher than the solubility temperature for carbide and/or nitride and lower than the melting point of the passive alloy, and a subsequent second step of dissolving nitrogen and/or carbon in the work piece at a temperature T2, which is lower than the temperature at which carbides and/or nitrides form in the passive alloy. The invention further relates to a member, such as a lock washer for securing bolts or nuts prepared using the method.
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