Magnitude of Stresses Generated
The thermal stress is simplistically given by E??T, where E is the Young’s Modulus, ?T is the temperature change and ? the thermal expansion coefficient
For steel the melting point is around 1500oC (thus ?T=1475K), the Young’s Modulus is 200GPa and the thermal expansion coefficient is 12x10-6 K-1
Thus a stress of 3.5GPa could be produced at room temperature - this will be limited by plastic deformation