一步和两步时效Haynes 282合金蠕变断裂寿命预测的统计比较

IF 1 4区工程技术 Q4 ENGINEERING, MECHANICAL

Journal of Pressure Vessel Technology-Transactions of the Asme Pub Date : 2023-01-31 DOI:10.1115/1.4056810

V. Cedro, M. Render, Kelechi Chukwunenye

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引用次数: 0

摘要

Paired和Welch t检验用于确定单步和两步时效锻造Haynes 282镍高温合金的预测蠕变断裂寿命之间是否存在统计学上的显著差异。两项测试都表明，在700-800°C的温度范围内没有差异。这些结果提供了一个定量的视角来支持先前出版物中得出的结论，即锻造单步和两步时效Haynes 282的蠕变断裂强度非常相似或相同。由于缺乏两步老化H282在800°C以上的蠕变断裂数据，因此无法将统计分析扩展到该温度以上。

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

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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来源期刊

Journal of Pressure Vessel Technology-Transactions of the Asme 工程技术-工程：机械

CiteScore

2.10

自引率

10.00%

发文量

审稿时长

4.2 months

期刊介绍： The Journal of Pressure Vessel Technology is the premier publication for the highest-quality research and interpretive reports on the design, analysis, materials, fabrication, construction, inspection, operation, and failure prevention of pressure vessels, piping, pipelines, power and heating boilers, heat exchangers, reaction vessels, pumps, valves, and other pressure and temperature-bearing components, as well as the nondestructive evaluation of critical components in mechanical engineering applications. Not only does the Journal cover all topics dealing with the design and analysis of pressure vessels, piping, and components, but it also contains discussions of their related codes and standards. Applicable pressure technology areas of interest include: Dynamic and seismic analysis; Equipment qualification; Fabrication; Welding processes and integrity; Operation of vessels and piping; Fatigue and fracture prediction; Finite and boundary element methods; Fluid-structure interaction; High pressure engineering; Elevated temperature analysis and design; Inelastic analysis; Life extension; Lifeline earthquake engineering; PVP materials and their property databases; NDE; safety and reliability; Verification and qualification of software.