Question

Which of the following materials has superior strength and rigidity at high elevated temperature?

(a) Aluminium-based alloys

(b) Copper-based alloys

(c) Zinc-based alloys

(d) Nickel-based alloys

I have been asked this question in homework.

I would like to ask this question from Directional Solidification topic in chapter Pattern and Mould, Principles of Gating & Risering of Casting-Forming-Welding I

Answer 1

Right answer is (d) Nickel-based alloys

Explanation: In the high temperature technology, the need for materials with superior strength, ductility and rigidity has been growing. Nickel-based alloys are the most widely used materials at the high elevated temperature, and super-alloys of it, are the greatest in the mechanical properties.