TY - JOUR
T1 - Superior strength-ductility balance in hot pressed swarf-Ti-6Al–4V alloy
AU - Zhao, Qinyang
AU - Pi, Ziqiang
AU - Lu, Xin
AU - Qu, Yingdong
AU - Bolzoni, Leandro
AU - Yang, Fei
N1 - Funding Information:
The authors would gratefully acknowledge the funding support from the Ministry of Business, Innovation and Employment (MBIE) , New Zealand ( UOWX1402 ), and Prof. Ma Qian from RMIT University to provide Ti-6Al-4V swarf materials.
Funding Information:
The authors would gratefully acknowledge the funding support from the Ministry of Business, Innovation and Employment (MBIE), New Zealand (UOWX1402), and Prof. Ma Qian from RMIT University to provide Ti-6Al-4V swarf materials.
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/6/24
Y1 - 2020/6/24
N2 - Ti–6Al–4V alloys were successfully fabricated by directly hot processing of the alloy swarf materials (having a size of 3 mm and 15 mm). The microstructure and mechanical properties of the hot-pressed swarf Ti-64 alloy and influence of starting swarf materials and heat treatment on the hot-pressed alloys were investigated. The hot-pressed swarf-Ti-64, made from 15 mm swarf that has a lamellar structure and 0.16% O, shows excellent strength-ductility balance, having a yield strength (YS) of 902 MPa, ultimate tensile strength (UTS) of 1016 MPa, and strain to fracture of 8.6%. After STA (solution treatment at 980 °C for 1 h, and then aging at 500 °C for 6 h), both alloy's strength and ductility were improved to a YS of 992 MPa, UTS of 1077 MPa, and strain to fracture of 17.3%. The strength-ductility combination of swarf-Ti-64 alloys is comparable or even better than the Ti–6Al–4V alloys manufactured by other approaches. It demonstrates that the hot processing is a promising process to produce high-quality Ti–6Al–4V alloy from the swarf materials.
AB - Ti–6Al–4V alloys were successfully fabricated by directly hot processing of the alloy swarf materials (having a size of 3 mm and 15 mm). The microstructure and mechanical properties of the hot-pressed swarf Ti-64 alloy and influence of starting swarf materials and heat treatment on the hot-pressed alloys were investigated. The hot-pressed swarf-Ti-64, made from 15 mm swarf that has a lamellar structure and 0.16% O, shows excellent strength-ductility balance, having a yield strength (YS) of 902 MPa, ultimate tensile strength (UTS) of 1016 MPa, and strain to fracture of 8.6%. After STA (solution treatment at 980 °C for 1 h, and then aging at 500 °C for 6 h), both alloy's strength and ductility were improved to a YS of 992 MPa, UTS of 1077 MPa, and strain to fracture of 17.3%. The strength-ductility combination of swarf-Ti-64 alloys is comparable or even better than the Ti–6Al–4V alloys manufactured by other approaches. It demonstrates that the hot processing is a promising process to produce high-quality Ti–6Al–4V alloy from the swarf materials.
KW - Heat treatment
KW - Hot pressing
KW - Microstructures and properties
KW - Titanium swarf recycling
UR - http://www.scopus.com/inward/record.url?scp=85084807951&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85084807951&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2020.139574
DO - 10.1016/j.msea.2020.139574
M3 - Article
AN - SCOPUS:85084807951
VL - 788
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
M1 - 139574
ER -