金属間化合物における粒内変形支配の超塑性的挙動に関する研究Ȁ÷ȂƖñǮäŉ Ŕōøäƌ¡ĭġ ƶ ¯
ȅüĖ 26 ýþuƳƅƒǯž®Ė AF-2014027Ȇ
キーワードȉǫôǰ²ÃůȇƞÝƝƢƪȇȂťÚĄ

1. 緒言 Ü*ǫôǰ²Ãů+ȇéťÕ)

$Ɔȇưđǔ

=Ľ:ȇȂťÕ%+āþȇ7.ȂťǨ²Űđ);:&8ƮŭłĲ* 1 #&$ľć;$: 1)Ȉ ȅSpark Plasma Sintering: SPSȆƹƫ=ŹȈĆ 20 mm

Ȃ 40 mm *Il`>AYSA)ūǲŖŹ*Et

drLtY&¸ĲƜŀ=ðĉȇEtdrLtY%Ƽ

ȇƮŭłĲ*fHpƢƪ+ȇȂťāþ=ƥĝ:4ȇ

"Il`>AY^rT=vw8ĠȇTjr])uĳÅ¢Î6¶ƣĹ&

ǇĲ=PUYȈūƣŃ+ȇťþ T = 1088ȇ1203ȇ

"ƞÝƢƪ8őĖ;:

4ȇČơƣĹƝǖØđ 2)*7(ŭǰ­øđ=ľć:

&5%(Ȉ uĳȇė*ƅƒInta%+ȇClass I ÔÎŧ 3)&È1323 KȇĐ¬ s = 16ȇ32ȇ48 MPaȇūƣķǰ t = 10 min%Ʒ"Ȉ,;:ǫôÎŧ)

2.3 相対密度$ƝÚĄĩǦ*ǖØđſğ° ūƣş+Ɯŀ8Î²ĖĄ:4ȇūƣŃ)7"$=žŵ:&=ƽ£ 3)Ȉ%ȇClass I ÔÎŧ&+]nHz)Ɯŀǰ*ƣÃx³¤(ƗĘãÒȇƓŢ+ȇŧǔ¸á&ŧà¸á*¸áîşù)řǚſÝ(ǿǤŕǴ&$Řã:ÀƯđ: 7)Ȉ%ȇŁƐ%+Ƃ9ȇ

ïëþ=Ŧçƺ]nH*ƨëđ=ƇǊȈë*ȂťÚĄ+ȇCottrell & Jaswon )79Ǘ&ŧǔǸÌŚþ*Ŧç)+ȇöţƺĘƺ*řǩŨƙŔƯǹáÞƍȅfN`@UYȆ:ƫĥÔÎŧ*ƦƎ%4)*ĂđſƂŹ)Żń:ŧǔǸÌŚĀ9Ǣ° 5)=ŹȅSolute drag HmtaȆ)ĩǦ;:Ȉ* solute dragȈŦç Ti3Al *]nH*ƽëþ=ŶǍëþ:ǗƣĹƝ)uŒ)¤ûg/cm3Ȇ%ǳƂïëþ=ƙ£ 8)Ȉ8)ȇ]nH*5Ȇ

Hmta+ȇ-3ǞþĐ¬* 3 |)ř:Űč=ĝ!ȇƣĹØđ*Ěę%ȇ/9Ǻv=Ǣ°:&%

*ƣĹƝřǚſuŒ)ÚĄȇƣĹƝĆ)ã:&(ƝÚĄĩǦ*ĳȇ :Ə*ǫôǰ²Ãů)

$5-3ǞþĐ¬* 3 |)ř:Űč 6)=Ɖ5*ãÒȇ* 1 # Ti3Al %:Ȉ%ŁƐ%+ȇƞÝƣĹƝ8Ė:

Ti3Al ǫôǰ²Ãů*Ȃť¬äŰđ=ǌňȇƝÚĄĩǦ*ǖØđſğ°*žŵÀƯđ)##$ŎǄƣņ)$ÖÇ:Ȉ

ƨëđ=ǆ:4ȇƂïëþ&ūƣŃ*Ǳ)#$İŶȈƢƪƾí)+ȇXMRnEhlȇ´vǕňÔǹáǾČǬ
ȅScanning Electron Microscopy: SEMȆȇǹŽīòÔǕňǹá Ǿ Č Ǭ ȅ Field Emission Type Scanning ElectronMicroscopy: FE-SEM Ȇ ȇ ǹ á Ƨ ĉ ĳ Į }  ȅ ElectronBackscattering Diffraction: EBSDȆǀŅ=ŹȈƺ

Ti3Al *]nH*ƓâŴ=Ŧç:4ȇSEM ƾí=ƷȇDmr^Nƺ*żǀŅQ`YȅDmr^NNYmt

2.方法

gȆ=Ź 2.1供試材

Ǉł&$ƋźǫôƘƜøŏŊÿƊƺ* Ti3Al Ɯŀ=ŹȅTi3Al = 3.9 g/cm3Ȇ7.ȇƽëþȅTi3Al =2.45

2.4 組織観察ǖØđſğ°žŵ:Ȉ$?nFhXN*¸Ŷ=§Źȇƽëþ=ŦçȈƸ 1 )*Ɯŀ*²äƢĖ=ƉȈ*ƜŀƝĆ+ 300 µm w8őĖ;$:Ȉ 2.2 放電プラズマ焼結 ūƣ)+ìÙǹŠøŔŊÿƊƺ*īǹalOeūƣ
Ƹ 1 Ti3Al Ɯŀ*²äƢĖElements
wt %
at %

Al
18.3
28.4

Tibal.
bal.

$ƓâŴ=ŦçȈȂťÑƩ©ĉ* Ti3Al ]nH*zĎǥ= FE-SEM 7. EBSD ǀŅ)79fH
pƢƪƾí=Ʒ"ȈƾíǺ=ƮśChmtƠȅ#800#4000Ȇ%ƞƅƈĉȇ3 µm *RAkirZbtNY%]`ƅƈ=Ʒ

ȇADrfmrIȅ_tgŬòƿþ: 70 °ȇŬòķǰ: 60 minȇǇĲÊǗǞþ: 1 rpmȆ)79ǬǺ)

vȈEBSD ǀŅŃ+ȇT = 1088 K *ǇĲ+ȇ­ǞǹÑ 20 kVȇŦçƛÌ 600 µm × 600 μmȇNWUaǰǵ 1 μmȇ
T = 1203 K *ǇĲ+ȇ­ǞǹÑ 20 kVȇŦçƛÌ 1000 µm× 1000 μmȇNWUaǰǵ 1.5 μmȇT = 1323 K *ǇĲ+ȇ­ǞǹÑ 20 kVȇŦçƛÌ 2500 µm × 2500 μmȇNWUa

ǰǵ 4 μm %:Ȉ

 2.5 ビッカース硬さ

 3.2空孔面積率 ÂūƣŃ%ƺ]nH*éť¬äŰđ=ǆ Í 2 )ūƣ*ƓâǺƑŴ&ūƣĐ¬*Ǳ=ƉȈū:4ȇƆŦç=Ʒ"ȈǇĲ*vƕǺ=ChmtƠƣ*ƓâǺƑŴ+ȇƂïëþ*ƣņ=¼ĶȇūƣĐ¬#160Ȇ%]m=½9ȇƮśChmtƠȅ#1000ȅ#100)+#4000Ȇ%ƞƅƈȇ3 µm *SAkirZbtNY%]`29ãȇūƣťþ)ã$T = 1088 K %+ 8ūƣťþļ5ƅƈĉȇŊÿƊeVKqƺ*eAHp_UEtNƆǇ1203 & 1323 K %+ 2%w%

ȁŔ%ŦçȈǇȁŃ+ȇéťsÝŚz)

Łƅƒ)

Ƶǩ 19.640 NȇƵǩǐƵķǰ 15 sec %$Ǉȁ8ƙ£Ƃïëþ+ 65

 2.6 高温圧縮試験
 Ti3Al ūƣ*Ȃť¬äŰđ=ǌň:4ȂťÑƩǇ

7ƞÝ%

Ȉǽ%

ÝŚzȇťþ T = 1173, 1223, 1273 Kȇ¦ľ-3Ǟþ ε!0 =

1×10 ȇ3×10 ȇ1×10 s %−1ƜŀĆƟ 300 µm &:4ȇƜŀÄÙ*ģǁǺƑó(Ò*%+(−3:ȈŰ)ȇŶǍëþ&ȇ7.ūƣķ*ťþ¤û8ūƣÛƸǺ)Ü*ƓâãAktīǹ­øŔ)79¥£ȈȂťÑƩǇȁŃ+ȇ−4:*)ïȇŶǍëþ70%%)ƭ8;:Ȉ;+ȇŹūƣ8 3 × 3 × 3 mm3 *ƿŇű*ȂťÑƩǇȁŮ=q−4)ȇ

8ƙ£Ƃïëþ=ƭ;,ȇ*ƓâǺƑŴ+ó(ȁ=èĴȈȂťÑƩǇȁ)+ȇƂïëþļ5;
ūƣŃȅT = 1323 Kȇs = 48 MPaȆ*ūƣ=Ź:Ȉ3.1 ƚ%ǜ/7$ȇƽĢëþ8ƙ£Ƃïëþ+$*ūƣŃ)ï01 100%%:ȈŦç+vƕǺ=ƁĆƧv) 5 mm ǰǵ% 5 ƗĘŦçȈ:ȈƓâŴ+10%ȇūƣťþ T =&ƭ8;:ȇǈơ+ĉ*ŎǄǋ:Ȉ

 3.3室温力学特性 Í 3 )_UEtNƆ&ūƣĐ¬*Ǳ=ƉȈÍ79ȇ:ȈÑƩǇȁŮ=ǹŚũ)PUYȇĘç*Ǉȁťþ2%ĵťȇǇȁŮťþ=å

_UEtNƆ5Ƃïëþ=¼ĶȇūƣĐ¬)ã:ç):4 15 min ǰĝ*!Ǉȁ=ǯßȈȂ795ȇūƣťþȂŃ%_UEtNƆÅv:ťÑƩǇȁ+ȇƃ-3Ɵ 0.15 )ǣ&<%ŖÅ=ƉȈȈ uƳ)ȇƣĹđłĲ*éť¬äŰđ+ȇÿȅ1Ȇ%Ƹ;: Hall-Petch *Ǳ 9, 10))

ȇƣĹƝĆČơ(0'āþ;:&Ƅ8;$:Ȉ

3.結果および考察 3.1相対密度Í 1 )ūƣ*Ƃïëþ&ūƣĐ¬*Ǳ=ƉȈÍ+Ti3Al *ŶǍëþȅrthȆ&ƽĢëþȅrappȆ*»ĳ%Ƃï
ëþ=Ŝ4ƣņ=Ɖ$:ȈÍ8¤:7)ȇƽ

;*ūƣťþ%5Ƃïëþ+ 65

ĹƝĆ*üĳŋ*ǝį8ȇūƣťþȂ:ȇ ƞÝ%:ȈOpen Symbol : rth
Solid Symbol : rapp8050

T = 1323 K
T = 1088 K60

10 20 30 40 50
Sintering Stress, s / MPa

1614121064060

Í 1 Ti3Al ūƣ*Ƃïëþ&ūƣĐ¬*ǱT = 1088 K

82Ti3Al Intermetallic Compound00'ƣĹƝĆ:Ȉ_UEtNƆ&ƣĹƝĆ*Ǳ+ȇct

18 Ti3Al Intermetallic Compoundrthrapp = 2.45 g/cm370 T = 1203 K:Ȉ

20= 3.9 g/cm390(1)%ȇHV +_UEtNƆȇH0 +ƣĹƝ):ħ

Void Area Fraction, F v (%)

Relative Density, r* (%)

10070%%

Í 4 )_UEtNƆ&ƣĹƝĆ*Ǳ=ƉȈœǘ*ƣ29ãȇūƣťþ)ãȇūƣťþ0'ƂïëþÅv:Å=Ɖ$ ŁƐ%+ÂūƣŃ)ï:fHpƢƪ+«Ĕ:ȇ$ 100%=ƉȇŶǍëþ8ƙ£Ƃïëþ+ȇūȂkdĨĐ¬ȇk +ctnsbUTįȇd +ƣĹƝĆ%Ģëþ8ƙ£Ƃïëþ+$*ūƣŃ)
ƣĐ¬)+

HV = H 0 +T = 1323 K

0T = 1203 K

10 20 30 40 50
Sintering Stress, s / MPa60

Í 2 Ti3Al ūƣ*ƓâǺƑŴ&ūƣĐ¬*Ǳ

3.4 高温圧縮試験に用いた焼結体の初期ミクロ組織 Í 6 )ȂťÑƩǇȁ)Ź

Ti3Al Intermetallic Compound

4500
4000

s = 48 MPa % :Ȉ*ūƣ*üÓƣĹƝĆȅdȆ+ȇT = 1323 K

3500

465 ± 102 µm *01Ɩǘ(ƞÝƢƪ8őĖ;$"$ȇŁƅƒ)Ź

3000
2500
2000
1500

T = 1203 K
T = 1088 K

500

010 20 30 40 50
Sintering Stress, s / MPa60
Í 3 Ti3Al ūƣ*éť):_UEtNƆ&ūƣĐ¬*Ǳ

Vickers Hardness, HV / MPa:ȇƜŀĆ79+Čơ&ƭ8;:ȈȆ*ƞÝ(Ɯŀ=ŹƣĹƝĖǭŸ$5000
Ti3Al Intermetallic Compound
4500
4000
3500
3000
2500
2000
1500
T = 1323 K
1000
T = 1203 K
T = 1088 K
500
000.05 0.1 0.15 0.2 0.25
Grain Size, d −0.5/ µm−0.5ȇSPS )79:5*&ƭ8;:Ȉ"$ȇ5000
4500 Ti3Al Intermetallic Compound
4000
T = 1323 K
3500
3000
T = 1203 K
2500
2000
T = 1088 K
1500
1000
500
060
657075
Relative Density, r* (%)Í 5 Ti3Al ūƣ*_UEtNƆ&Ƃïëþ*Ǳ

Í 4 Ti3Al ūƣ*_UEtNƆ&ƣĹƝĆ*Ǳ
nsbUT*Ǳ8Łń+Áv9*ƁƧ%Ɖ;:+%:ȇŁƅƒ* Ti3Al ūƣ%+ǝctnsbUT*ǱĖƔ$:Ȉ;=ƭí:4)ȇÍ 5 )_UEtNƆ&Ƃïëþ*Ǳ=ƉȈ*Í8¤:7)ȇŁƐ* Ti3Al ǫôǰ²Ãůūƣ*_UEtNƆ+ȇƂïëþÝ0'ƆÅv$:Ȉ;+ȇ

_UEtNƆ=Ŧç:Ƕ)ȇǇĲƸǺ=ƅƈȇ
3.2 ƚ%ǜ/7)ȇŁƅƒ%*ƓâĄĖ+ūƣÛƸǺ)ÜãÒ&Ē;ȇ*ƓâŕǴ=ƅƈ%+æ)ǳ¹%("4ȇ_UEtNƆƣĹƝ300 µmĆ)ã:795ƓâǺƑŴ)ã$2"ÀƯđ9ȇĉȇŎǄ:ďƻ:ȈƜŀĆ+ 300 µm wȅȇƜŀ*ƣĹƝĆ+ĿǃŦ%

10000 Ti3Al ūƣ*¦ľfHp

Ƣƪ=ƉȈūƣŃ+ȇūƣťþ T = 1323 KȇūƣĐ¬Vickers Hardness, HV / MPaVickers Hardness, HV / MPa

5000:ȈÍ6 ȂťÑƩǇȁ)Ź

 Ti3Al ūƣ*¦ľƢƪŁǇł*¦ľƢƪ+ȇƝŽ/9žŵ6ȅ10 µm wȆ795Ő4$ƞÝ%ƝĆ 3.6高温変形機構

:Ȉ

 3.5 高温圧縮試験 ƣĹđłĲ*ȂťÚĄ*ǏǍ)+ȇÿ2%Ƹ;: Í 7 ) Ti3Al ūƣ*ÚĄĺƧ=ƉȈÍ79ȇŁƅƒ Ti3Al ūƣ)
450

Ti3Al intermetallic compound

400

True Stress, s / MPa$5ȇȂťÚĄ)ŰĽ*ȂťȇT = 1273 KDorn Ô*Ǟþÿ 11)Ź8;:Ȉ⎛ Q ⎞ε! = Aσ n exp ⎜−⎟ ⎝ RT ⎠

(2)



%ȇ ε! +-3ǞþȇA +łĲçįȇs+Đ¬ȇn +350Đ¬Ğįȅn ȆȇQ +ÚĄ*Ťđ²C\nGtȇR +Ś300çįȇT +Ƥïťþ%250=ŝç:&%ȂťÚĄŔőÄç%:Ȉ%ȇ
Ti3Al * n =ŝç:4ȇ-3Ǟþ&Đ¬*yïį200150

e = 3×10−4 s−1+ȇ'*ÑƩǇȁťþ)

0
e = 1×10−4 s−1

00.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16
True Strain, e

T = 1223 K)∂( lnσ )∂(1 T )





(3)

 %ȇÍ 9 )Łƅƒ* Ti3Al *ÚĄ*Ťđ²C\nG

250

t=ƙ£:4*?to[BNapUY=ƉȈÍ+ȇ
e = 1×10−3 s−10Âťþ&5Đ¬Ğį7 6 &(:ƛÌ*¦ľ-200

3Ǟþ 3×10−4 s−1 )

150

0çį=|:&%ȇÚĄ*Ťđ²C\nGtƙ£%
e = 1×10−4 s−1050:Ȉ*ƣņȇŁƅƒ* Ti3Al *ƽ*ÚĄ*Ťđ²C\nGt+ȇ333 kJ/mol &(:Ȉ*+ȇTi3Al ǫôǰ(b)0450

0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16
True Strain, e

T = 1173 K

350
300250e = 1×10−3 s−10200

e = 3×10−4 s−10150


e = 1×10−4 s−1
0100
50

0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16
True Strain, eTi3Al intermetallic compound

10−310−410−570(c)010−2

Ti3Al intermetallic compound

400$HpNEUY×Ã*ƣņ%:Ȉÿȅ3Ȇ79ȇÍz*ƁƧ*±Ǧ)Đ¬Ğį&Ś
e = 3×10−4 s−1100

Í 7 Ti3Al ūƣ*ȂťÑƩǇȁ):ƃĐ¬ ƃ-3ĺƧ

đ²C\nGt=ƙ£:Ȉÿȅ2Ȇ+ȇÿȅ3Ȇ*7Q = nR3000 8) Ti3Al *ȂťÚĄŔő=ǏǍ:4ȇÚĄ*ŤĻĥ:&%:Ȉ350

0$57 6 =ƉȈ*

7Ȇ&ƴuƲ:ȈTi3Al intermetallic compound400

 Ti3Al * n +ȇǗ*vĵǢ°)Żń:ǗHmta* n ȅn = 4(a)0450

True Stress, s / MPaĄ*Đ¬Ğį=ƸȈÍ79Łƅƒ%Ź

050

True Stress, s / MPa

Ǳ=Í 8 )ƉȈÍz*Âťþ)ï:ƁƧ*±ǦÚe = 1×10−3 s−11000:Ȉ ÿȅ2Ȇ*Đ¬Ğį nȇ7.ÚĄ*Ťđ²C\nGtQ

Initial Strain Rate, e0 / s−1)Ź

-3Ǟþ0'ÚĄĐ¬w:Åƾí%:Ȉn 6

1100
Flow stress, s / MPa

700Í 8 Ti3Al ǫôǰ²Ãů):¦ľ-3Ǟþ&ÚĄĐ¬*Ǳ

Flow stress, ln s / MPa

19.8
19.6[4] īǹalOeūƣ)79ƺ Ti3Al ǫôǰ²
Ãů*éť¬äŰđ=_UEtNƆ%ǆ

Ti3Al intermetallic compound&<ȇǝctnsbUT*ǱǊ48;:Ȉe = 3×10−4 s−1n=6;+ȇūƣÛƸǺ)ÜãÒ&ƭ8;:Ɠâ*ąǻ=¼Ķ$

Ć+ 465 ± 102 µm *01Ɩǘ(ƞÝƢƪ8őĖ∂(1/T)

19.2
19.0∂lns;$:Ȉ"$ȇŁǇł*¦ľƢƪ+ȇƝŽ/9žŵ6
95Ő4$ƞÝ%[6] Łƅƒ)Ź

Qapp = 333 kJ/mol
QTi Al = 288 kJ/mol (Reference)

18.8
0.72 0.76 0.80 0.84 0.88 0.92
Reciprocal Absolute Temperature, 103T −1 / K−1
3

Í 9 Ti3Al ǫôǰ²Ãů*ÚĄ*Ťđ²C\nGtƙ£*4*?to[BNapUY
²Ãůz* Ti *ŌáƱúĜĮ*Ťđ²C\nGt*ıų 12)288 kJ/mol )ļ5Ǜ

&8ȇŁƅƒ%Ź

 Ti3Al*ȂťÚĄŔő+ȇTi3Al z* Ti *ŌáƱúĜĮ)ĈǞ;ǗHmta%:&ƭ8;:Ȉ v*&8ȇClass I ÔÎŧ*7

đ²C\nGtƂĜĮ*Ťđ²C\nGt)ĈǞ("Ȉȇ

Wolfenstine * Ti3Al ǫôǰ²Ãů*Hmta)Ǳ:ÖÇ%+ťþ 1023 & 1173 Kȇ-3Ǟþ 110−7 s−1 w)$Đ¬Ğį 3 &(:&ÖÇ;$:Ȉ%Ł6)

ƅƒ%+ȇWolfenstine *ÖÇ =ºƭ)ȇ79ȂťÕ%Ǉ
ȁ=èĴ:&%Ȃ-3ǞþÕ%* solute drag Hmta*žŵ=Ǉ3ȇƣņ&$79-3ǞþÕ%*èȁďƻ%:Ȉ Ti3Al ǫôǰ²Ãů*{:ȂťÚĄŔő+ȇTi3Al z* Ti *ŌáƱúĜĮ)ĈǞ

;ǗHmta)7:5*&ƭ8;:Ȉ
[7] Łƅƒ%+ȇClass I ÔÎŧ*7( solute dragHmtaȅĐ¬Ğį7 3ȇ#ÚĄ*Ťđ
²C\nGtƂĜĮ*Ťđ²C\nGt)Ĉ
Ǟ;:Ȇ)ǧ:Űč+ƽ£("ȇ

:ÖÇ%+ťþ 1023 & 1173 Kȇ-3Ǟþ 1
10−7 s−1 w)ÖÇ;$$Đ¬Ğį 3 &(:&:&8ȇ79-3ǞþÕ%*èȁďƻ%)ȇŁƅƒ%+solute drag HmtaȅĐ¬Ğį7 3ȇ#ÚĄ*Ť;:Ȇ)ǧ:Űč+ƽ£ƝĆȅ10 µm wȆ7

Wolfenstine * Ti3Al ǫôǰ²Ãů*Hmta)Ǳ6)

 Ti3Al ūƣ*üÓƣĹƝ[5] ȂťÑƩǇȁ)Ź

19.4:&ƭ8;:Ȉ

:&¤"Ȉ謝辞Łƅƒ+ȇƀǑËşÞźǑËüĖ  ýþuƳƅƒǯž®ĖȅüĖ 26 ýþuƳƅƒǯž®Ė AF-2014027Ȇ*®Ė=¾5*%Ȉ)ĕǎ*ē=Ƹ2Ȉ2ȇŁƅƒ=ǡ4:)9ȇèȁ)µ¬ǼȇŲƔƷĬşÏƔȂƖñǮäŉŔőȀ÷ȂƖñǮäŉñĪƌŔōøäJtNƋǒÝÆ)ŷÝ(:ĕǎ*ē=Ƹ2Ȉ8)ȇŁƅƒ*uǥ+ȇŰçÏƔƅƒǯžşůǔsłĲƅƒŔőNIMS ǠĦěŪĤǡ¨þȅ¾Ěăȉőǟ
łĲƅƒěŪªěŪǭsC\nGtőǟłĲ¤ǪƮŭł:&¤"ȈĲǅǃIntaIntamtStċęšêá·ÙȆ)7

4. 結9èĴ2Ȉµ¬s®ǂ=Ǔ92ċęšêá言 Ti3Al ǫôǰ²Ãů):ƝÚĄĩǦ*ǖØđſğ·Ù)ĕǎ*ē=Ƹ2Ȉ°*žŵ=ƇǊ:4ȇȂťÚĄŔő=ǌňȇw*ƣņ=ĊȈ
[1] īǹalOeūƣ)79ƺ Ti3Al ǫôǰ²Ãů+ȇƽĢëþ8ƙ£Ƃïëþ+$*ūƣŃ)ï01 100%%ëþ8ƙ£Ƃïëþ+ 65:*)ïȇŶǍ
70%%:Ȉ

[2] īǹalOeūƣ)79ƺ Ti3Al ǫôǰ²
Ãů*ƓâŴ+ȇūƣťþļ5

T = 1088 K%+ 810%ȇūƣťþ T = 1203 & 1323 K %+ 2%

w%:Ȉ

[3] īǹalOeūƣ)79ƺ Ti3Al ǫôǰ²
Ãů*üÓƣĹƝĆ+ȇūƣťþȂƝĆƞÝ%:Ȉ0'ƣĹ

参考文献1) õ¿ŗŞs~ ĸƷsƶÉ·ȉǫôǰ²ÃůǮȇ(2004)ȇźƬȄÐȈ2) T. G. Nieh, J. Wadsworth, and O. D. Sherby:

Superplasticity in Metals and Ceramics, (1997),Cambridge University Press.

3) ƶ¯ȉǙǫôȇ62-9 (2012), 344.

4) A. H. Cottrell, and M. A. Jaswon: Phil. Trans. Roy.
Soc. A, 199 (1949), 104.

5) J. Weertman: Trans. Metal. Soc. AIME, 218 (1960),207.

6) J. Wolfenstine: J. Mater. Sci. Lett., 9 (1990), 1091.

7) ȃźŗǷȉƜøäǉȇ30-11 1993790.

8) T. I. Bratanich, V. V. Skorokhod, L. I. Kotko, and V.

11) A. K. Mukherjee, J. E. Bird and J. E. Dorn: Trans.

9) E. O. Hall: Proc. Phys. Soc. Lond. B, 64 (1951), 747.

12) Y. Koizumi, M. Kishimoto, Y. Minamino, and H.

Y. Oliker: Int. J. Hydrogen. Energ., 36 (2011), 1330.

10) N. J. Petch: J. Iron Steel Inst., 174 (1953), 25.

ASM, 62 (1969), 155.

Nakajima: Phil. Mag., 88-24 (2008), 2991.