No abstract

No abstract

No abstract

No abstract

For the first time, additive manufacturing was used to obtain a strong joint (bonding strength > 200 MPa) between stainless steel and Ti-6Al-4V using a V interlayer. The V interlayer applied via solid-state joining prevented the formation of brittle intermetallic phases more effectively than a V interlayer deposited by a liquid-state process. The microstructure and strength of the joint interface depended on the laser power and scan speed. The joint strength decreased with increasing annealing time, especially after 4 and 24 h, demonstrating the presence of the Fe-VCr σ-phase. IMPACT STATEMENT For the first time, an additive manufacturing process using a V interlayer successfully produced a hybrid structure of stainless steel and Ti-6Al-4V alloy.

Stress -strain values obtained from tensile tests of aluminium and steel is used to evaluate the true stress -true strain values. The Hollomon's model is then used to predict the strain-hardening behavior in the two specimens. It is clearly seen that the strain-hardening behavior in metals can be described using the Hollomon's model. However, we have assumed that the onset of strain-hardening is at the yield point up until the ultimate tensile strength. The correlation between the experimental true stress -true strain values of aluminium and the calculated values using the Hollomon equation is much better than that of steel.

No abstract

No abstract