Quiz 4

Question 1

How can you transform a carbon steel into (metastable) martensite?

Answer 1

Heat treat in the austenite region of the Fe-C ohase diagram, then cool rapidly (quench)

Question 2

In a phase diagram of allyos, when liquid metal solidifies at one point (one temperature, one composition),that point is called…

Answer 2

Eutectic

Question 3

According to the Fe-C phase diagram, the melting temperature of cast iron is … than that steels.

Answer 3

Lower

Question 4

What is the most likely shape of powders produced using atomization

Answer 4

Spherical or rounded

Question 5

Which powder particle size distribution provides the highest compaction (least amount of pores between particles)?

Answer 5

Wide size distribution (large variation of size)

Question 6

What is a “green component” in powder metallurgy

Answer 6

Acomponent after compaction and before sintering

Question 7

What characterizes the CIP (Cold Isostatic Pressing) process

Answer 7

Compaction of component in a chamber with pressurizes liquid.