EFFECT OF DIFFUSION ANNEALING ON PROPERTIES OF TI/۳۰۴L STAINLESS STEEL EXPLOSION CLAD

In this study, commercially pure titanium/۳۰۴L stainless steel explosion bonded clads have been annealed under argon atmosphere over the temperature range of ۷۰۰-۹۰۰°C for ۱h.Microstructure of the clads have been investigated before and after anealing. X-ray diffraction studies revealed that the annealing products in the form of intermetallic phases were gradually formed at the interface of the annealed clads. It was also found that, the bonding zone width increased with temperature according to an Arrhenius type equation. On the base of this equation, the activation energy of bonding zone growth was found equal to about ۶۶.۵ kJ/mol. The bond strength of the diffusion annealed clads were evaluated stress relieved. The maximum average tensile strength of ~۳۵۰MPa was obtained for the as-welded clad. It was found that the bond strength decreased with annealing at ۷۰۰°C due to an increase in the width of brittle intermetallic layer.

کلیدواژه ها:

ANNEALING ، EXPLOSION CLAD ، TITANIUM ، ۳۰۴L STAINLESS STEEL