3. Materials-Process-Structure-Property Relationships

Try these first

1. 1.

   What is one key parameter that affects melt pool dynamics in PBF?

   Hint

   Think about the energy source used in the process.

2. 2.

   How does layer thickness influence the final product?

   Hint

   Consider how thicker layers might change the way parts fit together.

3. 3.

   What is the impact of increasing the laser power in PBF?

   • A) Leads to finer grain structure
   • B) Reduces residual stresses
   • C) Increases melt pool size
   • D) Slower build speed

   Hint

   Consider what happens to the energy distribution with higher power.

4. 4.

   Is it true that higher scan speed always leads to improved surface finish?

   • True
   • False

   Hint

   Think about how all aspects of PBF interact.

5. 5.

   Evaluate how different materials (metals vs. polymers) will react to identical PBF parameters. Discuss the expected differences in grain structure and mechanical properties.

   Hint

   Consider thermal characteristics of both categories.

6. 6.

   Design a controlled study involving PBF parameters to optimize for minimal residual stresses in a titanium alloy application. Outline the methodology and expected outcomes.

   Hint

   Think about the control of cooling and how it can affect stress.