1. Engineering
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  3. please help for this question asap 2 the following graph...

Question: please help for this question asap 2 the following graph...

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Please help for this question ASAP

2- The following graph is reported for the effect of carbon on the hardness of martensite and
austenite when retained at room temperature with the addition of Ni. Can you explain why the
effect of carbon is so severe on hardness for martensite while very mild for austenite?

900 65 800 60 Martensite in iron-carbon alloys 600 50 500 45 400 40 35 30 25 20 300 200 Austenite in iron-nickel-carbon alloys 100 0 0-4 0-6 08 wt % C The effect of carbon on the hardness of martensite and austenite (Winchell and Cohen, Transactions of the Metallurgical Society of AIME 224, 638, 1962). (DPN-Diamond Pyramid Number, Vickers Hardness)

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