Characterisation of steel/nickel bronze clad strips prepared by continuous solid/liquid bonding method

ABSTRACT

A continuous solid/liquid bonding method was successfully developed to fabricate Cu–10wt-%Ni–1wt-%Fe (nickel bronze) clad steel with a good metallurgical bonding in the present study. The results indicated that the diffusion distance of interface is about 1.90–2.18 µm. The average tensile shear strength of centre composite strip at as-cast state is 228 ± 5 MPa, while that of edge is 202 ± 6 MPa, and the interface strength is higher than that of bronze since the fracture always occurs on the nickel bronze side. After the rolling process, the tensile shear strength increases with the increasing rolling reduction. The reason can be ascribed to the strengthening of the nickel bronze whose strength is still lower than the interface.

KEYWORDS:

• Continuous solid/liquid bonding
• microstructure
• hardness
• tensile shear strength
• interface
• rolling

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The authors gratefully acknowledge the supports of National Key Research and Development Program of China (Nos. 2017YFB0306105, 2016YFB0301303), the Natural Science Foundation of China(Nos.51871041, 51771040, 51690163, 51525401), and Fundamental Research Funds for the Central Universities of China (No. DUT17JC44), to whom we are very grateful.