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Deformation and Microstructure of Titanium Chips and ...
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Deformation and Microstructure of Titanium Chips and ...
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[11] ABAQUS/Standard User's Manual, Version 5.8,
HKS Inc
., Pawtucket, USA. (1998). [12] Hou, Z.B.; Komanduri, R.: Int. Journal Mechanical Science 39 (1997) ...
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(a)
(b) cutting direction
dammed material tool
chip material concentration of deformation
workpiece
(d)
(c)
further deformation of segments
shear deformation
: " ;5 + )1 23' " + " , $ ?A@
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)
10
ap=90μm ap=40μm Fit function Fit function
10 9 8
Width of shear band [μm]
Width of shear band [μm]
11
7 6 5 4 3 2 1 0
10
20
30
40
50
60
70
80
vc = 5m/s vc=10m/s vc=20m/s vc=40m/s vc=80m/s
9 8 7 6 5 4 3 2 1 0
90
0
Cutting speed [m/s]
20
40
60
80
100
Cutting depth [μm]
: " 25 % ! % " +% % " %+' 0 ! + $ % %' : " " %+ " % ! " +% " %+ %+%$ "' 0 ! % $ 0 " % % + - $ ! 0". " 0 M - N . ! % 0 + ' % " % % ?;C@ % +%' % + + " % + ! 0"' B' + % " " !' 0 + % % % !% 7 ! % D % + % % " % % %' + % % !% " ! ! % " " + % " !+ %"' & " %" $ + %+ % !+ ' " " " % % % % % %$ " !+ %"' + + + % % + % ,+' : "' B ! " % +' , ! 0"' A' % " % > + % " M F' % $ %+% " +% ! " " %+' $ % $ " " ! ! % " + ! G % !, + ' 1 + 0 % +% " -. M ! + % % ! ! " %+ $' $ + % %
!+ +% 0 " + % % *' ;C
(a)
(b)
chip
scratch grid
tool
deformed lines
workpiece
: " B5 & + " % %' -. 1 " % % + + ' - . 1 " + % % !+ %"'
4
4
5 m/s 20 m/s 40 m/s 80 m/s
3
20 μm 34 μm 87 μm
3.5
Shear deformation ε
Shear deformation ε
3.5
2.5 2 1.5 1 0.5
3 2.5 2 1.5 1 0.5
0
0 0
5
10
15
20
25
30
35
40
45
Distance to workpiece edge [μm]
0
5
10
15
20
25
30
35
40
45
Distance to workpiece edge [μm]
: " A5 % % !+ %"' (5 " %+ B* "5 " +% DC '
;;
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