If a specimen of this steel is solutionized (aka, annealed to equilibrium) at 800°C, rapidly cooled to 550°C and is held at 550°C for 3 seconds, and is then quenched to room temperature, what constituents will make up the microstructure? a. Bainite and Martensite
b. Pearlite
c. Martensite
d. Austenite and Martensite
e. Austenite
f. Pearlite and Martensite
g. Austenite and Pearlite
h. Bainite

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k