Abstract
The paired and Welch's t-tests were used to determine if statistically significant differences exist between the predicted creep rupture life of single- and two-step aged wrought Haynes 282 nickel superalloy. Both tests indicated that there is no difference in the temperature range of 700–800 °C. These results provide a quantitative perspective to support the conclusions reached in previous publications that the creep rupture strengths of wrought single- and two-step aged Haynes 282 are very similar or the same. The lack of creep rupture data above 800 °C for two-step aged H282 precluded extending the statistical analysis above that temperature.
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Technical Briefs
References
1.
Pike
,
L. M.
, 2008
, “Development of a Fabricable Gamma-Prime Strengthened Superalloy
,” Superalloys 2008, TMS, Warrendale, PA, pp. 191
–200
.https://www.tms.org/superalloys/10.7449/2008/Superalloys_2008_191_200.pdf2.
Robertson
,
J. R.
, 2018
, “
Continued Developments in the Characteristics of HAYNES® 282® Alloy for Use in A-USC Applications
,” ASME
Paper No. ETAM2018-6745.10.1115/ETAM2018-67453.
ASME BPVC,
2021
, Code Cases Supplement 2 Case 3024 Ni-Cr-Co-Mo-Ti Precipitation Hardened Alloy UNS N07208, ASME BPVC.4.
Santella
,
M.
,
Tortorelli
,
P. F.
,
Render
,
M.
,
Pint
,
B.
,
Wang
,
H.
,
Cedro
,
V.
, III
, and
Chen
,
X.
(2022
), “
Effects of Applied Stress and Grain Size on Creep-Rupture Prediction for Haynes® 282 Alloy
,” Mater. Sci. Eng.: A
,
838
, p. 142785
.10.1016/j.msea.2022.1427855.
Unocic
,
K. A.
,
Shin
,
D.
,
Sang
,
X.
,
Cakmak
,
E.
, and
Tortorelli
,
P. F.
, 2019
, “
Single-Step Aging Treatment for a Precipitation-Strengthened Ni-Based Alloy and Its Influence on High-Temperature Mechanical Behavior
,” Scr. Mater.
,
162
, pp. 416
–420
.10.1016/j.scriptamat.2018.11.0456.
Kruger
,
K. L.
, 2017
, “
Haynes 282 Alloy
,” Materials for Ultra-Supercritical and Avanced Ultra-Supercritical Power Plants
, Vol.
15
,
A.
Di Gianfrancesco
ed.,
Woodhead Publishing
, Sawston, UK, pp. 511
–545
.7.
Srivastava
,
S.
,
Caron
,
J.
, and
Pike
,
L.
, 2014
, “
Recent Developments in the Characteristics of HAYNES 282 Alloy for Use in A-USC Applications
,” Proceedings From the 7th International Conference on Advances in Materials Technology for Fossil Power Plants, Electric Power Research Institute
,
Waikoloa, HI, Oct. 22–25,
pp. 120
–130
.https://www.researchgate.net/publication/290052544_Recent_developments_in_the_characteristics_of_HAYNES_282_alloy_for_use_in_A-USC_applications8.
Song
,
X.
,
Tang
,
L.
,
Chen
,
Z.
, and
Zhou
,
R.
, 2017
, “
Micro-Mechanism During Long-Term Creep of a Precipitation-Strengthened Ni-Based Superalloy
,” J. Mater. Sci.
,
52
(8
), pp. 4587
–4598
.10.1007/s10853-016-0703-09.
Jablonski
,
P. D.
,
Cowen
,
C. J.
, and
Hawk
,
J. A.
, 2010
, “
Effects of Al and Ti on Haynes 282 With Fixed Gamma Prime Content
,” 7th International Symposium on 718 and Derivatives, Superalloy 718 Derivatives
, Pittsburgh, PA, Oct. 10–13, pp. 616
–628
.https://www.tms.org/superalloys/10.7449/2010/Superalloys_2010_617_628.pdf10.
Viswanathan
,
R.
,
Hawk
,
J.
,
Schwant
,
R.
,
Saha
,
D.
,
Totemeier
,
T.
,
Goodstine
,
S.
,
McNally
,
M.
,
Allen
,
D. B.
, and
Purgert
,
R.
, “
Steam Turbine Materials for Ultrasupercritical Coal Power Plants (11/05/2009)
,” Report No. DE-FC26NT42442e
.10.2172/108131711.
Shen
,
C.
, 2014
, “
Modeling Creep-Fatigue-Environment Interactions in Steam Turbine Rotor Materials for Advanced Ultra-Supercritical Coal Power Plant
,” Report No. DE-FE0005859
.10.2172/113436412.
Shingledecker
,
J.
,
Evans
,
N.
, and
Pharr
,
G.
, 2013
, “
Influences of Composition and Grain Size on Creep–Rupture Behavior of Inconel® Alloy 740
,” Mater. Sci. Eng.: A
,
578
, pp. 277
–286
.10.1016/j.msea.2013.04.08713.
Zhu
,
X. W.
,
Cheng
,
H. H.
,
Shen
,
M. H.
, and
Pan
,
J. P.
, 2013
, “
Determination of C Parameter of Larson-Miller Equation for 15CrMo Steel
,” Adv. Mater. Res., Trans. Tech. Publ.
,
791–793
, pp. 374
–377
.10.4028/www.scientific.net/AMR.791-793.37414.
Haque
,
M. S.
, and
Stewart
,
C. M.
, “
Metamodeling Time-Temperature Creep Parameters
,” ASME J. Pressure Vessel Technol.
, (2020
)
142
(3
), p. 03154
.10.1115/1.404588715.
Davies
,
O. L.
, 1960
, “
Design and Analysis of Industrial Experiments
,” Hafner Publishing Company
, New York, Chap.
2
, pp. 13
–23
.16.
Zach,
2019
, Welch's t-Test: When to Use It + Examples, Statology, accessed Feb. 3, 2022, https://www.statology.org/welchs-t-test/Copyright © 2023 by ASME
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