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Report of Investigations 9211: Vacuum Induction Melting of Ti-6Al-4V in a Cold Crucible

Public Domain
File Language:
English


Details

  • Journal Article:
    MISSING
  • Personal Author:
    Paige, Jack I.
  • Description:
    The effect of fluoride inclusions on the properties of titanium produced from the Bureau of Mines-developed induction slag melting process is of concern to the titanium industry. The objective of the research was to determine the effect of removing the nonconductive molten calcium fluoride (caf2) slag used as an insulator between the titanium and the segmented copper crucible. The data were obtained from single-induction-melted ingots prepared with no caf2,insulating slag and an ingot prepared with the normal addition of 4 pct caf2 slag. The results showed that the mechanical properties of single-induction-slag-melted and annealed ti-6a1-4v alloy exceed the minimum values specified in "aerospace materials specification for titanium alloy bars and forgings ams4928h." High- cycle, tension-tension fatigue testing yielded similar results. The data from 44 of the 45 specimens were contained within the typical scatter band for fatigue data on wrought ti-6a1-4v alloy. Although the removal of the insulating slag is a desirable change, the data from the specimens with the previously standard 4 pct slag addition showed no detrimental effect from the slag inclusions. [Description provided by NIOSH]
  • Subjects:
  • Source:
    MISSING :6 pages
  • Series:
  • Subseries:
    Report of Investigations
  • Document Type:
    Text
  • Genre:
    Report
  • Place as Subject:
    United States
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Division:
    ALRC - Albany Research Center
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    11 pdf pages
  • NIOSHTIC Number:
    nn:10006289
  • Federal Fiscal Year:
    1988
  • Peer Reviewed:
    False
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:329ee279d21efeee9e2459d72e3f4c918db487c2b8f62a2b569e75140cb0b8ff263fcabd61e4f9c6a55880fd5755c91ec9561231c8bffd5ebbb6dbccd301963f
  • Download URL:
  • File Type:
    Filetype[PDF - 399.23 KB ]
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