51. Ellingham diagram for M - MOx reaction is a plot of
52. Shottkey defect is a
53. Which one of the following does not improve fatigue life of steel component?
54. As per TTT diagram, bainite will form in eutectoid plain carbon steel, when heated to 850° followed by
55. Arrange the following in terms of increasing severity of quench.
P. Oil quenching
Q. Water quenching
R. Water quenching with agitation
S. Brine quenching
P. Oil quenching
Q. Water quenching
R. Water quenching with agitation
S. Brine quenching
56. Coordination number in FCC crystal structure
57. In a binary isomorphous system A-B, constitutional supercooling can occur in the
58. Martensitic transformation in plane carbon steel occurs by
59. A 0.2 wt.% plain carbon steel sheet is heated and equilibrated in the inter-critical region followed by instant water quenching. The microstructure of the quenched steel sheet consists of
60. A material with grain size of ASTM No.6 has a lattice frictional stress 100 MN/m2 and locking parameter (Hall-Petch constant) 0.10 MN/$${m^{\frac{3}{2}}}$$
Grain size of the material is approximately
Grain size of the material is approximately
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