Question

Difference between cold worked metal and tempered martensite

Answer 1

Answer:

300→350°C Tempered-Martensite Embrittlement

It is attributed to the formation of cementite particles at the martensite lath boundaries and within the laths. During tempering, the particles coarsen and become large enough to crack, thus providing crack nuclei which may then propagate into the matrix.

__________

Answer 2

Answer:

Tempering happens at a lower temperature than annealing. It aims at reducing the Annealed metals cool slowly in the oven or a material like sand. Tempered steel cools quickly, often in the air. Annealing creates a softer steel that's easier to work within manufacturing certain kinds of products...

hope it helps you