Question

8. Hardness of martensite in steel depends on​

Answer 1

Answer:

The highest hardness of a pearlitic steel is 400 Brinell, whereas martensite can achieve 700 Brinell. ... For steel with 0–0.6% carbon, the martensite has the appearance of lath and is called lath martensite. For steel with greater than 1% carbon, it will form a plate-like structure called plate martensite.

Explanation:

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Answer 2

Answer:

The rate of increase in the hardness of martensite decreases as the carbon concentration increases. The hardness may even decrease as the carbon content exceeds 0.8-1 mass-% .