TY - JOUR
T1 - Development of AA6061/316 stainless steel surface composites via friction stir processing
T2 - Effect of tool rotational speed
AU - Liu, Shoufa
AU - Paidar, Moslem
AU - Mehrez, Sadok
AU - Ojo, Olatunji Oladimeji
AU - Mahariq, Ibrahim
AU - Elbadawy, Ibrahim
N1 - Publisher Copyright:
© 2022
PY - 2022/10
Y1 - 2022/10
N2 - Metallic and alloy particles are recognized as alternatives to ceramic reinforcements to improve the overall characteristics of Al metal matrix composites. The present study aimed to investigate the friction stir processing/manufacturing of the 316 stainless steel particles reinforced AA6061 Al matrix composites by varying the tool rotational speeds. The microstructure, tensile, hardness, wear, corrosion behavior, and shear punching tests of the composites were studied. The results showed that the friction stir processing route produced no particle-matrix reaction in the composite and dislocation entanglements were formed close to the inherent 316 stainless steel particles within the Al matrix. The improved mechanical action of the tool aided particle fragmentation as the average 316 stainless steel particle sizes decreased from 41.88 to 26.89 μm. As a result of the dynamic recrystallization and particle-assisted pinning effects, the mean grain sizes of the composite decreased from 7.48 to 4.31 μm when the tool rotational speed was raised. An increment in the tool rotational speed (800–1200 rpm) triggered a rise in the maximum shear force (1198–1562 N), tensile strength (200.09–279.98 MPa), and maximum hardness value (121–139 HV) of the composite while a favorable decrease in the composite's wear rate (0.63–0.20 mg/m) and the friction coefficient (0.38 ± 0.01–0.21 ± 0.01) ensued. The composite's improvement is attributable to the homogeneous spread of dislocation.
AB - Metallic and alloy particles are recognized as alternatives to ceramic reinforcements to improve the overall characteristics of Al metal matrix composites. The present study aimed to investigate the friction stir processing/manufacturing of the 316 stainless steel particles reinforced AA6061 Al matrix composites by varying the tool rotational speeds. The microstructure, tensile, hardness, wear, corrosion behavior, and shear punching tests of the composites were studied. The results showed that the friction stir processing route produced no particle-matrix reaction in the composite and dislocation entanglements were formed close to the inherent 316 stainless steel particles within the Al matrix. The improved mechanical action of the tool aided particle fragmentation as the average 316 stainless steel particle sizes decreased from 41.88 to 26.89 μm. As a result of the dynamic recrystallization and particle-assisted pinning effects, the mean grain sizes of the composite decreased from 7.48 to 4.31 μm when the tool rotational speed was raised. An increment in the tool rotational speed (800–1200 rpm) triggered a rise in the maximum shear force (1198–1562 N), tensile strength (200.09–279.98 MPa), and maximum hardness value (121–139 HV) of the composite while a favorable decrease in the composite's wear rate (0.63–0.20 mg/m) and the friction coefficient (0.38 ± 0.01–0.21 ± 0.01) ensued. The composite's improvement is attributable to the homogeneous spread of dislocation.
KW - 316 stainless steel particulates
KW - AA6061 aluminum alloy
KW - Aluminum metal matrix composite
KW - Friction stir processing
KW - Mechanical properties
KW - Shear punching test
UR - http://www.scopus.com/inward/record.url?scp=85136231763&partnerID=8YFLogxK
U2 - 10.1016/j.matchar.2022.112215
DO - 10.1016/j.matchar.2022.112215
M3 - Article
AN - SCOPUS:85136231763
SN - 1044-5803
VL - 192
JO - Materials Characterization
JF - Materials Characterization
M1 - 112215
ER -
