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TRANSCRIPT
L12 1 Ni3SiNi3Si
Si TiL12
Ni,Si,Ti8.0g/cm3
300500 Nb Ni3
(Si,Ti) 5600 SUS440C
Ni3(Si,Ti)
Ni3(Si,Ti)SUS440C 80
1 L12(A3B) 2 Ni3(Si,Ti)
2
2GPa
Ni3(Si,Ti)Ni 2
VIM→ → →
Ni3(Si,Ti)
43 Al
Mo SEM
2 Mo4 Al Co Cr Mo
20%Ta 5at%
10μm
(b)(a)
10μm
3 1173K 1h (a)Al (b)MoNi3(Si,Ti) SEM
Ni3(Si,Ti)
Si Ti NiNi6
Ni 7
0 10 20 30 40 50 600
20
40
60
80
100
Me
tha
no
l co
nve
rsio
n (
%)
Reaction time (h)
793K
713K
6 Ni3(Si,Ti) 7Ni3(Si,Ti)SEM
(FSW)
0
500
1000
1500
0.2
% p
roof st
ress
(M
Pa)
Al-alloyed Co-alloyed Cr-alloyed Mo-alloyed Unalloyed
(b)
400 600 800 10000
10
20
30
40
50
60
Testing temperature (K)
Elo
ngatio
n (
%)
Al-alloyed Co-alloyed Cr-alloyed Mo-alloyed Unalloyed
(c)
4 Ni3(Si,Ti)
5 Ni3(Si,Ti)
1 600 Ni3(Si,Ti)(SUS440C)