---
author: Akbar Rahman
date: \today
title: MMME2045 // Materials in Design
tags: [ uni, mmme2045, materials ]
uuid: eb10418c-4bfa-4b3f-941b-cbc53e3d5eee
---

# Material Selection

# Terminology

- Light alloys --- metals with densities of less than 4.5 gcm$^{-1}$ and typically less than 3
                   characterised by higher strength to weight ratio than typical steel alloys
- Cast --- as-cast condition. Cooling rate and grain refiners are key to improve strength and toughness
- Wrought --- (rolled, extruded, forged) Properties rely on appropriate heat treatment or working
              such as precipitation hardening or work hardening