The best replacement for melting is dissolving.

The best alternatives to melting are rated as following:
★★★★★  dissolving
★★★★  boiling
★★★★  freezing
★★  burning
★★  liquefaction
★★  growing
★★  fusion
★  smelting
★  creaming butter
  evaporation
  sublimation
  annealing

Your alternative for melting is not listed? Suggest!
Speaking about melting, one probably shouldn't forget about induction heating.

Other search terms related to melting and their ratings are:
★★★★★ induction heating
★★★ styrofoam
You have in mind a companion for melting and it is not yet here? Propose!



Google Trends

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melting
dissolving
boiling