Abstract
A typical face-centered cubic CoCrFeNiAl0.3 high entropy alloy was welded by friction stir welding. Sound joints without welding defects were obtained. Four typical regions, the stir zone, thermomechanically affected zone, heat affected zone and base metal could be detected. The stir zone showed a refined equiaxed microstructure due to recrystallization and it exhibited the highest hardness with grain refinement. The grain size decreased slightly with increasing the welding speed. The thermomechanically affected zone exhibited a mixed microstructure comprising coarse and fine grains due to partial recryatllization. The present result shows a potential capability for joining high entropy alloys through friction stir welding and may enhance their engineering applications.
| Original language | English |
|---|---|
| Pages (from-to) | 142-144 |
| Number of pages | 3 |
| Journal | Materials Letters |
| Volume | 205 |
| DOIs | |
| Publication status | Published - 15 Oct 2017 |
| Externally published | Yes |
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Friction stir welding of a CoCrFeNiAl0.3 high entropy alloy. / Zhu, Z. G.; Sun, Y. F.; Goh, M. H.; Ng, F. L.; Nguyen, Q. B.; Fujii, H.; Nai, S. M.L.; Wei, J.; Shek, C. H.
In: Materials Letters, Vol. 205, 15.10.2017, p. 142-144.Research output: Contribution to journal › Letter › Research › peer-review
TY - JOUR
T1 - Friction stir welding of a CoCrFeNiAl0.3 high entropy alloy
AU - Zhu, Z. G.
AU - Sun, Y. F.
AU - Goh, M. H.
AU - Ng, F. L.
AU - Nguyen, Q. B.
AU - Fujii, H.
AU - Nai, S. M.L.
AU - Wei, J.
AU - Shek, C. H.
PY - 2017/10/15
Y1 - 2017/10/15
N2 - A typical face-centered cubic CoCrFeNiAl0.3 high entropy alloy was welded by friction stir welding. Sound joints without welding defects were obtained. Four typical regions, the stir zone, thermomechanically affected zone, heat affected zone and base metal could be detected. The stir zone showed a refined equiaxed microstructure due to recrystallization and it exhibited the highest hardness with grain refinement. The grain size decreased slightly with increasing the welding speed. The thermomechanically affected zone exhibited a mixed microstructure comprising coarse and fine grains due to partial recryatllization. The present result shows a potential capability for joining high entropy alloys through friction stir welding and may enhance their engineering applications.
AB - A typical face-centered cubic CoCrFeNiAl0.3 high entropy alloy was welded by friction stir welding. Sound joints without welding defects were obtained. Four typical regions, the stir zone, thermomechanically affected zone, heat affected zone and base metal could be detected. The stir zone showed a refined equiaxed microstructure due to recrystallization and it exhibited the highest hardness with grain refinement. The grain size decreased slightly with increasing the welding speed. The thermomechanically affected zone exhibited a mixed microstructure comprising coarse and fine grains due to partial recryatllization. The present result shows a potential capability for joining high entropy alloys through friction stir welding and may enhance their engineering applications.
KW - Friction stir welding
KW - Hardness
KW - High entropy alloys
KW - Microstructure
UR - http://www.scopus.com/inward/record.url?scp=85021084064&partnerID=8YFLogxK
U2 - 10.1016/j.matlet.2017.06.073
DO - 10.1016/j.matlet.2017.06.073
M3 - Letter
VL - 205
SP - 142
EP - 144
JO - Materials Letters
JF - Materials Letters
SN - 0167-577X
ER -