Engineering Materials

Choose the correct option:

Elements common in Brass and Bronze is

(i) Aluminium
(ii) Copper
(iii) Gold
(iv) Zinc

Choose the correct option:

Grey and spheroidal cast irons mainly differ in that the graphite phase is present as:

(i) Flakes in grey iron and spheroidal nodules in spheroidal iron
(ii) Cementite in grey iron and flakes in spheroidal iron
(iii) Spheroidal nodules in grey iron and flakes in spheroidal iron
(iv) Cementite in both alloys

Write the composition, properties and applications of:
(i) grey cast iron and
(ii) white cast iron.

Explain the purpose of alloying in steels, naming at least four common alloying elements and summarising their main effects on mechanical properties.

Classify stainless steels with their compositions and applications.

Write a short note on: Super alloy

Explain the following: Super Alloys