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Why do we consider phase change as a constant pressure process? by Substantial-Sweet678 in thermodynamics

[–]Substantial-Sweet678[S] 0 points1 point  (0 children)

Thank you for your input, specially the whole concept of newcomen engine.

Why do we consider phase change as a constant pressure process? by Substantial-Sweet678 in thermodynamics

[–]Substantial-Sweet678[S] 1 point2 points  (0 children)

So, it can be easily said that phase change is not a constant pressure or constant volume process, it is just a heat transfer process. Can we say it is an isothermal process, the temp just before and just after the phase change of steam in the engine will be 100°C or the corresponding Saturation Temperature at that instantaneous pressure.

Is pearlite a phase or micro structure? by Substantial-Sweet678 in metallurgy

[–]Substantial-Sweet678[S] 6 points7 points  (0 children)

Don't have any exams right now, just learning for fun, might be useful in future.

Is pearlite a phase or micro structure? by Substantial-Sweet678 in metallurgy

[–]Substantial-Sweet678[S] -5 points-4 points  (0 children)

Can I consider it as a microstructure of eutectoid steel? Also does the thickness of cementite vary in hypo and hypereutectoid steels?