Metallurgy Quiz

Another name for Aramid fibre is:

• Kevlar

• GRP

• Ceramic Fibre

The corrosion resistance of Titanium is:

• usually improved by a sulphide coating

• usually provided by lightly etching with phosphoric acid

• normally adequate without need for special surface treatment

A glass fibre roving is a :

• single glass fibre filament used to make a thread

• closely woven fabric impregnated with resin

• collection of continuous, parallel fibres.

High Speed Steel retains hardness at high temperatures primarily due to the inclusion of:

• Vanadium

• Molybdenum

• Tungsten

Rockwell numbers refer to:

• proof strength

• hardness

• impact resistance

Fatigue failure may be defined as:

• failure caused by stress in excess of the material U.T.S.

• reduction in strength due to alternating loads

• failure due to impact

A thermo-plastic will normally:

• have considerable elastic properties

• be soft and mouldable when heated

• be hard and relatively brittle

The nominal length of a British unified hexagonal bolt is the:

• length of the plain portion between the head and the thread

• length of the threaded portion of the bolt

• overall length of the bolt measured from under the head

The Brinell hardness testing machine makes an indentation in the component tested using a:

• diamond pyramid

• conical indenter

• steel ball

When medium carbon steel is rapidly quenched from just above it's upper critical point, the following metallurgical structure is formed:

• Martensite

• Pearlite

• Austenite