GB941822A - Powder-metallurgical production of bodies intended for further working - Google Patents

Powder-metallurgical production of bodies intended for further working

Info

Publication number
GB941822A
GB941822A GB18539/62A GB1853962A GB941822A GB 941822 A GB941822 A GB 941822A GB 18539/62 A GB18539/62 A GB 18539/62A GB 1853962 A GB1853962 A GB 1853962A GB 941822 A GB941822 A GB 941822A
Authority
GB
United Kingdom
Prior art keywords
sigm
sintered
alloy
alloys
phase
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB18539/62A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wargons AB
Original Assignee
Wargons AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wargons AB filed Critical Wargons AB
Publication of GB941822A publication Critical patent/GB941822A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0207—Using a mixture of prealloyed powders or a master alloy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12021—All metal or with adjacent metals having metal particles having composition or density gradient or differential porosity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)

Abstract

Sintered alloys such as stainless and alloy steels are formed by sintering a loose, uncompacted powder mixture comprising at least 20% of a ferrous alloy which contains at least 50% sigm<\>ga phase, and a metal which alloys with the sigm<\>ga phase during sintering so that the sintered alloy is free of sigm<\>ga and the pone volume is a maximum of 10% of the sintered volume. The metals which alloy with the sigm<\>ga phase are Fe, Co, Ni and Cu and the sigm<\>ga containing ferrous alloys specified are:- 30% Fe - 45% Cr - 20% Ni - 5% Mo ; 26% Fe - 44% Cr - 17% Ni - 10% Mo - 3% Cu ; 38% Fe - 5% Cr - 12% Ni. 35-60% Cr - 5-35% Ni - 2-10% Mo and/or W. - Fe balance. The mixed powders of minus 200 mesh are poured into a ceramic or steel mould and sintered at 1050 DEG -1350 DEG C. in hydrogen or under vacuum. The hydrogen atmosphere may be generated by the decomposition of a hydride. The sintered body is finally hot worked to final density. Specifications 749,472 and 800,343 are referred to.
GB18539/62A 1961-05-19 1962-05-14 Powder-metallurgical production of bodies intended for further working Expired GB941822A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE530861 1961-05-19

Publications (1)

Publication Number Publication Date
GB941822A true GB941822A (en) 1963-11-13

Family

ID=20266179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18539/62A Expired GB941822A (en) 1961-05-19 1962-05-14 Powder-metallurgical production of bodies intended for further working

Country Status (3)

Country Link
US (1) US3126279A (en)
DE (1) DE1258109B (en)
GB (1) GB941822A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940269A (en) * 1968-07-10 1976-02-24 Minnesota Mining And Manufacturing Company Sintered austenitic-ferritic chromium-nickel steel alloy
US3975193A (en) * 1973-04-18 1976-08-17 Airco, Inc. Powder metallurgy process for producing stainless steel stock
CN107245594B (en) * 2017-06-23 2019-02-26 歌尔股份有限公司 The preparation method of powdered metallurgical material

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920958A (en) * 1955-11-21 1960-01-12 Wargons Ab Method for the powder metallurgical manufacture of chromium alloys

Also Published As

Publication number Publication date
US3126279A (en) 1964-03-24
DE1258109B (en) 1968-01-04

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