Question

The following median grain size data were obtained during isothermal liquid phase sintering of an 82W-8Mo-8Ni-2Fe alloy. What is the time dependence for the grain growth in the system and what is the probable grain-coarsening mechanism?Ignore the initial grain size. Time, min 30 120 480 960 grain size, um 6.0 13.4 21.3 31.6

Answer 1

The probable grain-coarsening mechanism is : Ideal grain growth mechanism

(
`d^(2)`-
`d_(0) ^(2)` = kt )

Step-by-step explanation:

The plot attached below shows the time dependence of the growth of grain.

The probable grain-coarsening mechanism is : Ideal grain growth mechanism

the ideal growth follows this principle =
`d^(2) - d^(2) _(0)` = kt

d = final grain size

`d_(0)` = initial grain size

k = constant ( temperature dependent )

t = 0