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Iron-Base Alloys Strengthened by Laves Phases as Substitutes for Stainless Steels

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  • Personal Author:
  • Description:
    One federal Bureau of Mines research goal, to minimize requirements for domestically scarce mineral commodities through conservation and substitution, can be accomplished by utilizing more abundant elements such as iron, molybdenum, and titanium. An example of this research is the study of precipitation-hardening, iron-base alloys containing molybdenum and titanium, as substitutes for the high- tonnage stainless steels that are high in imported nickel and chromium. The precipitation-hardened iron-base alloys are strengthened by a dispersion of the ternary laves phase, fe2(mo, ti). Aluminum and chromium additions changed the solid solubility limits of molybdenum and titanium in a-iron and affected the composition of precipitating phases. A baseline composition of fe- 7mo-2ti was selected to study the effects of aluminum and chromium additions on the precipitation-hardening mechanism and microstructure and was also used in studies of mechanical properties and oxidation resistance. The study yielded workable, precipitation- hardening alloys, with elevated temperature strengths equivalent to or superior to types 304 and 316 stainless steels. Chromium and aluminum additions in combination were more effective in providing oxidation resistance than either addition was alone. [Description provided by NIOSH]
  • Subjects:
  • Series:
    Mining Publications
  • Subseries:
    Report of Investigations
  • Document Type:
    Text
  • Genre:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Division:
    ALRC - Albany Research Center
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    1-24
  • NIOSHTIC Number:
    nn:10006908
  • Federal Fiscal Year:
    1980
  • Peer Reviewed:
    False
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:01f906c0638bb0ed99d9f0a1630af44d4c6527460eee355de82ba2154725acdae3f1f2db8c232cf70241ef059df216b31d34276b1ca1c38ae2353ba2e1d10197
  • Download URL:
  • File Type:
    Filetype[PDF - 8.78 MB ]
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