Out-of-Phase, Strain: ＋/-0.64% Tension at 400℃, Compression with 1h hold time at 900℃
Further Improvement
第4世代 4 th gen. SC 第2世代 2 nd Gen. SC 実用合金 第5世代 5 th Gen. SC
Superalloys and Advanced Processing 2011
4-6 July, 2011 at IMR, Shenyang
Development of Superalloys and Coatings for Next Generation Gas Turbines
Hiroshi HARADA(原田広史) Senior Scientist -High Temperature Materials Yuefeng GU（谷 月峰）, Kyoko KAWAGISHI（川岸京子） High Temperature Materials Unit National Institute for Materials Science (物質・材料研究機構) Japan
Thermal 55%
Nuclear 35% Thermal 55%
Hydro 10%
Power Supply
CO2 Emission
Efficiency of Advanced Thermal Power Systems
1700℃GT
X 1/2 CO2 (Efficiency, fuel)
Coal firing Steam Turbine
Present Status of “HTM 21” Project
Phase 1: F.Y.1999-2005, Phase 2: F.Y.2006-10, followed by NEDO budget and others Materials Developments (1) Single crystal superalloys with temperature capabilities as high as 1150 ℃. (2) Environmental coating and TBC systems for superalloys, e.g.,EQ coatings. (3) Next generation Ni-Co base turbine disc alloys with temperature capabilities as high as 750℃. (4) Ni-PGMs base superalloy with temperature capabilities beyond 1200℃ up to 1800 ℃. (5) Materials design and analysis. (6) Virtual gas turbine/aeroengine. Applications
(3rd gen.)
(4th gen.)
(5th gen.)
Zhang, et.al (NIMS）, Scripta Mat (2003) Koizumi, et al (NIMS), Superalloys 2004
NIMS Alloy Design Program
A mathematical model composed of experimental equations derived from the NIMS superalloy database.
100 nm
For creating larger negative lattice misfit, for finer dislocation networks to be accommodated.
Koizumi, et al(NIMS), Superalloys 2004
Finer dislocation network prevents dislocation passing through the rafted ’interface
1000℃,245MPa クリープ破断寿命 （ｈ） Creep rupture life (h)
Sato, et. al (NIMS), Superalloys 2008
Creep and Oxidation properties of 4 th and 5 th Generation SC alloys
Contents
1. Background 2. Alloy Development SC, EQ.coating, Cast-and -wrought 3. Applications 4. Conclusions
Power supply and CO2 Emission in Japan (normal situation)
5th 5-6Re 5-6Ru
6th ?
TMS-XXX？
HTM 21 Project (Phase 1)
100℃
Typical SC superalloy compositions (wt%)
Generation／Alloy／Developer PWA1480 1st Rene’ N4 CMSX-2 TMS-6 PWA1484 Rene’ N5 2nd CMSX-4 TMS-82+ Rene’ N6 3rd CMSX-10 TMS-75 PWA1497/ MX-4 4th TMS-138 TMS-138A 5th TMS-162 TMS-196 P&W GE C-M NIMS P&W GE C-M NIMS/ Toshiba GE C-M NIMS P&W,GE, NASA NIMS/IHI NIMS NIMS/IHI NIMS Co 5 8 4.6 10 8 9 7.8 12.5 3 12 16.5 5.8 5.8 5.8 5.6 Cr 10 9 8 9.2 5 7 6.5 4.9 4.2 2 3 2.0 3.2 3.2 3.0 4.6 Mo 2 0.6 2 2 0.6 1.9 1.4 0.4 2 2.0 2.9 2.9 3.9 2.4 W 4 6 8 8.7 6 5 6 8.7 6 5 6 6.0 5.9 5.6 5.8 5.0 Al 5 3.7 5.6 5.3 5.6 6.2 5.6 5.3 5.75 5.7 6 5.55 5.8 5.7 5.8 5.6 Ti 1.5 4.2 1 1 0.5 0.2 Ta 12 4 9 10.4 9 7 6.5 6.0 7.2 8 6 8.25 5.6 5.6 5.6 5.6 Re 3 3 3 2.4 5.4 6 5 5.95 5.0 5.8 4.9 6.4 Ru 3.0 2.0 3.6 6.0 5.0 Density 8.70 8.56 8.56 8.90 8.95 8.63 8.70 8.93 8.98 9.05 8.89 9.20 8.95 9.01 9.04 9.01
Oxidation Resistance
2 nd Gen. Alloys
TMS-19X Alloys
0
1000
Creep Strength
Kawagishi, et.al (NIMS), Mat.Sci.Tech(2009)
Development of new metallic coating: EQ-Coating Concept: A coating system in an EQuilibrium state between the substrate and coating materials, causing no interdiffusion and its resultant microstructure degradation.
Practically used
25 ℃/ generation PWA-1480, CMSX-2
50℃
ReneN6, CMSX-10
1050
1000e
PWA1484 CMSX-4
3rd 5-6Re
MX-4/PWA1497
4th 5-6Re 2-3Ru
TMS-138/138A
Oxidation resistance: 1100℃, 1h cyclic Creep strength: 1000℃/245MPa rapture life(h)
ist generation, commercial 2nd generation, commercial 3rd generation, commercial 1st generation, NIMS 2nd generation, NIMS 3rd generation, NIMS 4th and 5th generation, NIMS 4th generation, oxidation reisitant, NIMS 5th generation, oxidation resistant, NIMS
Ni-base superalloy turbine blades
Pseudo-Binary Phase Diagram
L+γ
1300℃
L
L+γ '
β
Temperature
Ni+X
γ
900℃
A
● ● ●
γ'
C
● ● ● ●
B
Ni Al+Y
γ＋γ'
γ’precipitation hardening Ni-base superalloy
（TMS： Tokyo Meguro or Tsukuba Material Single）
Sato, et. al (NIMS), Superalloys 2008
Creep vs TMF properties of 4 th and 5 th Generation SC alloys