Solid to liquid phase due to external heat source

Hi friends,

I am trying to model selective laser sintering. I was able to model the moving heat source, and I have
also implemented phase change module. But, I couldn't see the melting front due to moving heating.

I would like to know if there is a way around for modeling such solid to liquid transitions based on external heat source.

It would be really helpful, if you could help me with this regard.

Thank you in advance.

Best regards,
Adhi