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Roll‐Bonded Titanium/Stainless‐Steel Couples, Part 1: Diffusion and Interface‐Layer Investigations
Author(s) -
Dziallach S.,
Bleck W.,
Köhler M.,
Nicolini G.,
Richter S.
Publication year - 2009
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200800276
Subject(s) - materials science , titanium , annealing (glass) , diffusion , electron microprobe , metallurgy , diffusion bonding , atmospheric temperature range , titanium alloy , layer (electronics) , composite material , thermodynamics , physics , alloy
A survey of the diffusion of the alloying elements Fe, Ni and Cr in a roll‐bonded titanium/stainless‐steel couple after an application‐orientated heat treatment is presented. Diffusion profiles of the investigated elements by means of EPMA, and the diffusion coefficients and activation energies for application‐oriented short annealing times up to 12 min in a temperature range of 750 to 950 °C are determined. The transformation of the hcp α ‐titanium into bcc β ‐titanium has a significant influence on the diffusion of the elements. The forming interface layers are characterised by LOM and SEM pictures.