Tempering

Question 1

What is Tempering Dependant on?

Hint: Think of how tempered glass is made

Answer 1

Residual Stress

Question 2

What does Tempering do?

Answer 2

Rapidly Cools molten material

Question 3

What is the Difference between the Outside & Inside of a material, that involves Tempering?

Answer 3

Outside: Cools more quickly → Shrinks + Solidifies

Inside: Solidifies more slowly

Question 4

In Tempering, what does the Residual Stress Gradient** do to the Outside & Inside Volume of a material?

Answer 4

Outside Volume: Compressive Stress (σr)

Inside Volume: Tensile **