Study on Creep Behaviors of GH3230 Superalloy With Side Notches or a Center Inclined Hole at 900°C and 1000°C

IF 3.1 2区材料科学 Q2 ENGINEERING, MECHANICAL

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-11-11 DOI:10.1111/ffe.14498

Qipeng Xu, Cheng Hou, Xiaodong Ren, Jingjing Yang, Xiaochao Jin, Qing Yang, Xueling Fan

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引用次数: 0

Abstract

GH3230 superalloy is one of the most promising materials for aviation engine hot components, characterized by lots of holes and prone to creep failure. To study the effect of the side notches or center inclined hole on creep behaviors of GH3230 superalloy, a series of creep experiments and numerical simulations based on Sinh creep-damage constitutive model were conducted at 900°C and 1000°C. The influence mechanism of notch strengthening on creep life was analyzed under different notch sizes. The results show that the opposite combination of stress triaxiality and multiaxial stress caused by notches determines the creep damage and life. With the increase of the stress concentration factor, the notch strengthening factor demonstrates a trend of first increasing and then decreasing, whereas the increase in net stress is accompanied by the augmentation of notch strengthening factor under the same stress concentration factor.

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来源期刊

Fatigue & Fracture of Engineering Materials & Structures 工程技术-材料科学：综合

CiteScore

6.30

自引率

18.90%

发文量

256

审稿时长

4 months

期刊介绍： Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.