Hrm... your blade is made of titanium yet considering how liquid metal are, it'd be quite fragile, and seeing how it will take the shape of a light weight metallic blade than actually hardening, it would be quite nonsensical that it could slice through things as liquid could be easily thrown into disarray unless it was fluid. Anyways, try putting more emphasis on more reasons like temperature or something like that of why it would cut through anything it touches.
Also another thing I've found problems with was the weight of 0.5 KG, no matter what metal it is, the heavier it is, the denser it would be. Considering the lightest sword from the Nodachi is at least 2.6 KG, whilst the lightest from a Katana is 1.3 KG, you should at least beef up the weight a bit unless you want the metal of your katana to snap off easily from a single whack against a stone slab.
Anyways, fix these problems.