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Engineering Materials Technology, 2nd Edition
book

Engineering Materials Technology, 2nd Edition

by William Bolton
October 2013
Intermediate to advanced content levelIntermediate to advanced
468 pages
20h 15m
English
Newnes
Content preview from Engineering Materials Technology, 2nd Edition
214
Engineering
Materials Technology
strength shows a marked reduction if tempering at about 300°C occurs.
Because of
this,
tempering should not be used at such temperatures. This also
has the effect that the impact strength resulting from slow cooling from a
higher tempering temperature is much lower than that when rapid cooling is
used. This effect is referred to as temper
brittleness.
It can be overcome by
adding a small amount of molybdenum, e.g. 0.3 per cent, to the alloy.
100
Ϊ 80
.5 60
c
O
g 40
3
-a
oi 20
0
1200
- 1000
-£800
c
T3
3 600
JZ
-1400
c
03
- 200
0
^3
13
>
1 -
-
150
120
90
60
30
0
Impact strength
Rapid cooling
Impac
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Publisher Resources

ISBN: 9781483141077