Next Article in Journal
Surface Modifications of Nanoparticles for Stability in Biological Fluids
Previous Article in Journal
Elasto-Plastic Mechanical Properties and Failure Mechanism of Innovative Ti-(SiCf/Al3Ti) Laminated Composites for Sphere-Plane Contact at the Early Stage of Penetration Process
Open AccessArticle

Electro-Superplastic Solid State Welding of 40Cr/QCr0.5

by Yaoli Wang 1,*, Guangxin Wang 1,2,* and Keke Zhang 1,3
1
School of Materials Science and Engineering, Henan University of Science & Technology, Luoyang 471003, China
2
Research Center for High Purity Materials, Henan University of Science & Technology, Luoyang 471003, China
3
Collaborative Innovation Center of Nonferrous Metals, Luoyang 471023, China
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(7), 1153; https://doi.org/10.3390/ma11071153
Received: 2 May 2018 / Revised: 29 June 2018 / Accepted: 3 July 2018 / Published: 6 July 2018
(This article belongs to the Section Manufacturing Processes and Systems)
Hot-squeezed chrome bronze QCr0.5 and ultra-fine treated 40Cr steel have been successfully welded using an electro-superplastic solid-state welding technique. Results have shown that the tensile strength of a 40Cr/QCr0.5 weld joint can be greatly increased, up to or exceeding that of QCr0.5 base metal. The weld interface between 40Cr and QCr0.5 has achieved metallurgical bonding and there are less micro-gaps, thicker transition regions and more copper convexes and dimples on the fracture surface of the 40Cr side when applying an external electrical field of E = 3 kV/cm, as well as with other welding parameters, including no vacuum, no shield gas, a pre-pressure of 56.6 MPa, an initial strain rate of 1.5 × 10−4 s−1, a pressure welding temperature of 710–800 °C, and a pressure welding time of 0–8 min. View Full-Text
Keywords: copper alloys; steel; electro-superplastic solid-state welding; strength; metallurgical bonding copper alloys; steel; electro-superplastic solid-state welding; strength; metallurgical bonding
Show Figures

Graphical abstract

MDPI and ACS Style

Wang, Y.; Wang, G.; Zhang, K. Electro-Superplastic Solid State Welding of 40Cr/QCr0.5. Materials 2018, 11, 1153.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop