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R ‐curve behaviour of friction stir welds in aluminium‐lithium alloy 2195
Author(s) -
KRONINGER H. R.,
REYNOLDS A. P.
Publication year - 2002
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1046/j.1460-2695.2002.00466.x
Subject(s) - materials science , friction stir welding , welding , base metal , metallurgy , fracture (geology) , alloy , aluminium , plasma arc welding , composite material
The fracture resistance of friction stir welds in 2195‐T8 is described in this paper. R ‐curves were produced for several crack planes, parallel to the welding direction and situated at varying distances from the weld centreline. The friction stir weld was also characterized by hardness and tensile testing. Fracture resistance of the friction stir weld is compared to the base metal and to a variable polarity plasma arc weld. Results show that the material in and around the friction stir weld is tougher than the base metal and the variable polarity plasma arc weld. The friction stir weld fracture performance is discussed in the light of the observed hardness and fractographic data presented.