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Perlakuan Panas pada Baja Karbon: Efek Media Pendinginan terhadap Sifat Mekanik dan Struktur Mikro

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@- & 9&' '53&' 2'5&' #2 +2'

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#$ 2 H+% - , &3"3&' 2'5&'

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29&'%&3 ( 5& 3& 2! '55& #2$ 2! ' & $&(&K $&(& &$ +& '5K+& '5 #&$&+2(2$ "4

-&92 % 2 &+#2 "4 "'("3 +& '5K+& '5 #$ 2 #2$ &3"&' #&'& , *," , &'#& #2$ &3"&' $+& B '5 ]"2'6! '5 ] ''2& '5 &%( !# *,4!" 4 !0! !% ,4 !#!" * !4

23"&(&' +#&3 &$ &+#2 "4 9&4& "3"$ 2'5&' +2'55"'&3&' +2 ' "4 ( ! - #(&1 * ( +2 ' "4 +#&3 #2$ !&(3&' & &+ &+9&$ - &(&'5 "4 2(&33&' +2' &(&$ &' "4"'5 K "4"'5'%& (&!&' 32&$&! +2' &(&$ 2! #2'&!&' %&'5 92$4&$&3 @

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/.%""-&%- # 4# * 4

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2'5&' 3& ' "($&- ( & &3"3&' +2'55"'&3&' ). 292 &$ K + &' & 3 ! 8 292 &$

@@ + 2 &+& @- +2' (, 32+" &' &+&( 9&<&! + 3$ 3 # +2(& "$5 &' +2'55&+9 ( + 3$ &$ +& '5K+& '5 &+#2 "4 -(%

(%$ "! ! ! ,4, ! !" !0!

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# " = , : );8 &' 9&4& % " , : ;

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) =%; +2' '53&(, 3&$2'& "& 9&(& &' 5$& ' #2$ &("&' > "+2 +2'"$"'- &2$&! "'("3 '"3 2&

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&$ #& & &+#2 "4 & ' %&'5 #2 &4&$

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+ 3 '%& +& ! $2' &! 9&' '53&' 2'5&' 9&4& W"2'6!

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&!-(%& "! ! ,4 !#!" * !4 !0!

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292 &$ @ " 2, .. " 2 &' " 2

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#2' 5 '&' 92$92 &

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(%( "! ! # 4# * 4

& #2'5&+&(&' + 3$ +2 & " + 3$ 3 # +2'"'4"33&' 9&!<& &+#2 "4 +2+ 3 24"+ &! 92 &$ ($"3("$ 2$$ ( :92$<&$'& #"( !; &' 2 3 ( #2&$ ( :<&$'& 32! (&+&'; 2#2$(

#2$ !&(3&' & &+ &+9&$ - &'%& ($"3("$ 2$$ ( (2$ 29"( & &+ 9&4& %&'5 +2'%29&93&' &( +23&' 3 9&4& $2' &! :9&4&

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

;-&+9&$ 7- * ( + 3$ &$ &+#2 "4 9&4& : );

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(22 - $ 62 & '5 '22$ '5 @ : @ ; 7. K

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< 1&$9 ' (22 / & 1 '5 &'

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=-L=M- !& 2 ! & , '2%6 +92 - @ =, (22 ?

6$ ($"6("$2 &' $ #2$( 2 - 2> 2$ (

-) ? !((#?DD E- - $5D @- @ 7D = K@K@ K

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