The effect of crystallographic orientation on solid metal induced embrittlement of Ti-6Al-1Mo-1V in contact with copper
Paper in proceedings, 2013

Solid metal induced embrittlement (SMIE) occurs when a metal experiences tensile stress and is in contact with another metal with lower melting temperature. SMIE is believed to be a combined action of surface self-diffusion of the embrittling species to the crack tip and adsorption of the embrittling species at the crack tip, which weakens the crack tip region. In the present study, both SMIE of the near alpha alloy Ti-8Al-1Mo-1V in contact with copper and its influence by crystallographic orientation have been studied. U-bend specimens coated with copper were heat treated at 480°C for 8 hours. One of the cracks was examined in detail using electron backscatter diffraction technique. A preferable crack path was found along high angle grain boundaries with grains oriented close to [0001] in the crack direction; this indicates that there is a connection between the SMIE crack characteristics and the crystallographic orientation.

crystallographic orientation

metal induced embrittlement (MIE)

titan

EBSD

Author

Pia Åkerfeldt

Luleå University of Technology

Robert Pederson

GKN Aerospace

Luleå University of Technology

Marta-Lena Antti

Luleå University of Technology

Yiming Yao

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Uta Klement

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

IOP Conference Series: Materials Science and Engineering

17578981 (ISSN) 1757899X (eISSN)

Vol. 48 1 012011- 012011

Subject Categories

Materials Engineering

Metallurgy and Metallic Materials

Areas of Advance

Production

Materials Science

DOI

10.1088/1757-899X/48/1/012011

More information

Latest update

5/14/2018