Effect of temperature on tensile behavior, fracture morphology and deformation mechanisms of Nickel-based single crystal CMSX-4

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NSTL
Elsevier

外文摘要：The effect of temperature on the tensile behavior and deformation mechanisms in a single crystal super alloys CMSX-4 is addressed and deduced by transmission electron microscopy in the temperature range from room temperature to 1100 degrees C. It is found that the tensile yield strength reaches a peak at 800 degrees C. And then, the yield strength decreases with increasing temperature. At room temperature, anti-phase boundary shearing dominates the plastic deformation. From 800 degrees C to 850 degrees C, the plastic deformation mechanism is mainly controlled by stacking fault shearing. The Kear-Wilsdorf locks have also appeared. When the temperature reaches at 950 degrees C, dislocation loops with anti-phase boundary shearing of the xfffc; precipitates are presented. Above 950 degrees C, the plastic deformation mechanism is processed by the rafted structure of the precipitates by-passing, i.e., Orowan by-passing and dislocation climb. Finally, according to the experimental results, the variety of stacking faults with temperatures and the relationship between the yield strength and plastic deformation mechanism are discussed. (c) 2022 Elsevier B.V. All rights reserved.

外文关键词：

Tensile behaviorTemperatureCMSX-4DislocationSuperlattice stacking faultsPARTICLE HARDENING MECHANISMSSTACKING-FAULT FORMATIONNI-BASED SUPERALLOYTENSION/COMPRESSION ASYMMETRYCOMPRESSION ASYMMETRYDISLOCATION-MOTIONDEPENDENCECREEPSTRESSALLOYS

作者：

Wang, Tianjian、Zhang, Hong、Liu, Chunhua、Gong, Xiufang、Pei, Yubing、Zou, Yu、Liu, Yongjie、Wang, Qingyuan

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作者单位：

Sichuan Univ

China Aerodynam Res & Dev Ctr

Dongfang Turbine Co Ltd

Univ Toronto

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出版年：

2022

DOI：

10.1016/j.jallcom.2022.165175

Journal of Alloys and Compounds

EISCI

ISSN：0925-8388

年,卷(期)：2022.912

被引量11
参考文献量54