Statistical Comparison of Creep-Rupture Lifetime Predictions of Single and Two-Step Aged Wrought Haynes 282 Alloy-Reference-Cited by-同舟云学术

Statistical Comparison of Creep-Rupture Lifetime Predictions of Single and Two-Step Aged Wrought Haynes 282 Alloy

Published:2023-02-22 Issue:3 Volume:145 Page:
ISSN:0094-9930
Container-title:Journal of Pressure Vessel Technology
language:en
Short-container-title:

Author:

Cedro Vito¹,Render Mark²,Chukwunenye Kelechi³

Affiliation:

1. National Energy Technology Lab , 626 Cochrans Mill Road, Pittsburgh, PA 15236

2. National Energy Technology Lab , 3610 Collins Ferry Road, Morgantown, WV 26507

3. KeyLogic Systems, Inc. , 3168 Collins Ferry Road, Morgantown, WV 26505

Abstract

AbstractThe 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.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Safety, Risk, Reliability and Quality

Link

https://asmedigitalcollection.asme.org/pressurevesseltech/article-pdf/145/3/034501/6990579/pvt_145_03_034501.pdf

Reference16 articles.

1. Continued Developments in the Characteristics of HAYNES® 282® Alloy for Use in A-USC Applications,2018

2. Effects of Applied Stress and Grain Size on Creep-Rupture Prediction for Haynes® 282 Alloy;Mater. Sci. Eng.: A,2022

3. Single-Step Aging Treatment for a Precipitation-Strengthened Ni-Based Alloy and Its Influence on High-Temperature Mechanical Behavior;Scr. Mater.,2019