As the head of R&D in your company which deals with aluminum, you are faced withaluminum alloy 2014 which was solution heat-treated. The alloy needs to be hardened byprecipitation hardening to have a minimum yield strength of 345 MPa and ductility of atleast 12% EL. What practical precipitation heat treatment with respect to temperature andtime will you recommend to give these mechanical properties? Explain your answerUsc-AZType here to search@2WSaltTRINIT#X3apsED$4CRAtomic percentage, magnesiumOeneF%5TDVG6YB&7HUN8J911MKĽLP73prt sc?Ľ1backspacepause40)Turn8:59 AM9/13/2022 11enter7homeA28.15end9

Answered: aluminum alloy 2014

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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As the head of R&D in your company which deals with aluminum, you are faced with
aluminum alloy 2014 which was solution heat-treated. The alloy needs to be hardened by
precipitation hardening to have a minimum yield strength of 345 MPa and ductility of at
least 12% EL. What practical precipitation heat treatment with respect to temperature and
time will you recommend to give these mechanical properties? Explain your answer
Usc
-
A
Z
Type here to search
@
2
W
S
alt
TRINIT
#
X
3
aps
E
D
$
4
C
R
Atomic percentage, magnesium
O
ene
F
%
5
T
D
V
G
6
Y
B
&
7
H
U
N
8
J
9
11
M
K
Ľ
L
P
73
prt sc
?
Ľ
1
backspace
pause
40)
Turn
8:59 AM
9/13/2022 11
enter
7
home
A
28.
1
5
end
9

Expert Solution

Step 1

Problem asked to specify a practical heat treatment for a 2014 aluminum alloy that will produce a minimum
yield strength of 345 MPa and a minimum ductility of 12%EL.

From Fig., the following heat-treating temperatures and time ranges can give the required yield strength.

fig.: graph yield strength vs duration of precipitation

Temperature $(^{o} C)$	Duration
260	/
204	.5h<t<10h
149	9h<t<700h
121	500h

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