4. (a) Medium carbon content steels (i.e. 0.4 wt.%C) and 2000 series Aluminium A

Question

4. (a) Medium carbon content steels (i.e. 0.4 wt.%C) and 2000 series Aluminium Alloys (i.e. Al- 4 wt.% Cu) are solution treated, quenched and aged to produce desired combinations of mechanical properties for structural applications i. At what temperatures are the two alloys solution treated? 2 marks 11 What crystal structure(s) do the medium carbon content steel and Al-4 wt.% Cu have at the solution treatment temperature? 2 marks iii. Both alloys are rapidly quenched from the solution treatment temperature to RT What phase changes (including crystal structures), if any, take place in both alloys? 2 marks iv. Briefly describe the microstructural changes (including crystal structures) during tempering of the medium carbon content steel. 2 marks v. Briefly describe the microstructural changes during the ageing of Al- 4 wt.% Cu. 2 marks SECTION B, Question 4, continued over page TURNOVER

Explanation / Answer

1. Eutectic Point: 780

Related Questions

Navigate

• Browse (All)
• Browse 4
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.