Effect of nickel and tin additions on formation of liquid phase in copper bearing steels during high temperature oxidation

S. Akamatsu, Takehide Senuma, Y. Takada, M. Hasebe

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

It is well known that nickel is a beneficial alloying element in copper bearing steels as it prevents hot shortness. On the other hand, the addition of tin promotes hot shortness. Though some mechanisms for promoting these phenomena have been suggested, a quantitative discussion has still failed to establish the cause. In the present study, changes in the composition in the vicinity of the scale/metal interface owing to high temperature oxidation were experimentally determined using pure irons with copper, nickel, and tin additions. The experimental findings, such as the fraction of liquid phase and the change in composition in the progress of scale formation, were then explained by thermodynamic considerations using the Fe-Cu-Ni and Fe-Cu-Sn phase diagrams calculated from a computerised thermodynamic database. The thermodynamic considerations were also applied to a quantitative discussion on hot shortness and some measures for preventing hot shortness of copper bearing steels were suggested.

Original languageEnglish
Pages (from-to)1301-1307
Number of pages7
JournalMaterials Science and Technology
Volume15
Issue number11
Publication statusPublished - Nov 1999
Externally publishedYes

Fingerprint

Bearings (structural)
Tin
Thermooxidation
Steel
Nickel
Copper
tin
liquid phases
nickel
steels
Thermodynamics
copper
thermodynamics
oxidation
Liquids
Alloying elements
Chemical analysis
alloying
Phase diagrams
Metals

ASJC Scopus subject areas

  • Materials Science(all)
  • Metals and Alloys

Cite this

Effect of nickel and tin additions on formation of liquid phase in copper bearing steels during high temperature oxidation. / Akamatsu, S.; Senuma, Takehide; Takada, Y.; Hasebe, M.

In: Materials Science and Technology, Vol. 15, No. 11, 11.1999, p. 1301-1307.

Research output: Contribution to journalArticle

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