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Corrosion Pitting Resistant Martensitic Stainless Steel And Method For Making Same
Abstract: A method (100) of making a forged, martensitic, stainless steel alloy is provided. The alloy is a forged preform of martensitic, pitting corrosion resistant stainless steel alloy comprising, by weight: 12.0 to 16.0 percent chromium; greater than 16.0 to 20.0 percent cobalt, 6.0 to 8.0 percent molybdenum, 1.0 to 3.0 percent nickel, 0.02 to 0.04 percent carbon; and the balance iron and incidental impurities. The alloy has a microstructure that comprises a retained austenite phase less than or equal to 2 percent by volume of the microstructure. The method heats (120) the preform to a solutionizing temperature to form a solutionized microstructure. The preform is cooled (130) with a liquid to room temperature. The preform is immersed (140) in a cryo-liquid to transform the retained austenite phase in the microstructure to martensite. The preform is heated (150) to a temperature of less than 600°F for a time sufficient to form a tempered forged preform.
Notices, Deadlines & Correspondence
Patent Information
Applicants
GENERAL ELECTRIC COMPANY
Inventors
1. MAJKA, Theodore Francis
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202317056626-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [23-08-2023(online)].pdf | 2023-08-23 |
| 2 | 202317056626-STATEMENT OF UNDERTAKING (FORM 3) [23-08-2023(online)].pdf | 2023-08-23 |
| 3 | 202317056626-REQUEST FOR EXAMINATION (FORM-18) [23-08-2023(online)].pdf | 2023-08-23 |
| 4 | 202317056626-PROOF OF RIGHT [23-08-2023(online)].pdf | 2023-08-23 |
| 5 | 202317056626-PRIORITY DOCUMENTS [23-08-2023(online)].pdf | 2023-08-23 |
| 6 | 202317056626-POWER OF AUTHORITY [23-08-2023(online)].pdf | 2023-08-23 |
| 7 | 202317056626-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [23-08-2023(online)].pdf | 2023-08-23 |
| 8 | 202317056626-FORM 18 [23-08-2023(online)].pdf | 2023-08-23 |
| 9 | 202317056626-FORM 1 [23-08-2023(online)].pdf | 2023-08-23 |
| 10 | 202317056626-FIGURE OF ABSTRACT [23-08-2023(online)].pdf | 2023-08-23 |
| 11 | 202317056626-DRAWINGS [23-08-2023(online)].pdf | 2023-08-23 |
| 12 | 202317056626-DECLARATION OF INVENTORSHIP (FORM 5) [23-08-2023(online)].pdf | 2023-08-23 |
| 13 | 202317056626-COMPLETE SPECIFICATION [23-08-2023(online)].pdf | 2023-08-23 |
| 14 | 202317056626-Proof of Right [04-09-2023(online)].pdf | 2023-09-04 |
| 15 | 202317056626-POA [22-09-2023(online)].pdf | 2023-09-22 |
| 16 | 202317056626-FORM 13 [22-09-2023(online)].pdf | 2023-09-22 |
| 17 | 202317056626-AMENDED DOCUMENTS [22-09-2023(online)].pdf | 2023-09-22 |
| 18 | 202317056626-Others-180923.pdf | 2023-10-31 |
| 19 | 202317056626-Correspondence-180923.pdf | 2023-10-31 |
| 20 | 202317056626-FORM 3 [20-02-2024(online)].pdf | 2024-02-20 |