Effect of Heterogeneous Lamella Structure on Mechanical Properties of Double-Pass Friction Stir Processed Cu–30%Zn Alloy

Xu, Nan; Xu, Yuzhui; Zhang, Boshuo; Song, Qing; Zhao, Jianhua; Bao, Yefeng

doi:10.1007/s12540-023-01448-0

Cited by 3 publications

(2 citation statements)

References 77 publications

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“…The CG layer deforms first during the elastic-plastic stage, while the GS layer remains in the elastic stage. It has been found that the ductility of GS copper is mainly related to the CG core and is limited by the surface NG layer [10,39], which leads to dislocation pile-up on the boundary between GS and CG [7,40]. In addition, high HDI stresses make it easier to activate slip systems in the NG and CG domains [41].…”

Section: Mechanical Behaviorsmentioning

confidence: 99%

“…Heterostructured materials, such as heterogeneous lamella-structured materials [7], gradient-structured materials [8], harmonic-structured materials [9], etc., refer to materials that include zones of heterogeneity with a significant variation in mechanical and physical characteristics. The emergence of gradient structure (GS) materials provides a promising solution to alleviate the strength-ductility trade-off.…”

Section: Introductionmentioning

confidence: 99%

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Effects of SMAT Temperature and Stacking Fault Energy on the Mechanical Properties and Microstructure Evolution of Cu-Al-Zn Alloys

Zhou,

Gong,

Sun

et al. 2023

Metals

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Alloys with a gradient structure (GS) exhibit a superior combination of strength and ductility. However, the effects of treatment temperature and stacking fault energy on the tensile behavior and microstructure evolution of GS alloys have not been systematically investigated. In this study, GS Cu-Al-Zn alloys with different stacking fault energy (SFE, 40/7 mJ/m2) were prepared using surface mechanical attrition treatment (SMAT) at cryogenic and room temperature, respectively. The microstructure results indicate that more stacking faults and deformation twins were activated in the SFE-7 alloys at cryogenic temperature, which led to higher strength compared to that of the alloys SMAT-ed at room temperature. In addition, it was found that the yield strength and hetero-deformation-induced (HDI) stress of the SFE-7 alloy were significantly higher than those of the SFE-40 alloy, resulting in a good combination of strength and ductility. Furthermore, more dispersed strain bands were observed in the SFE-7 sample during whole tensile deformation, which contributes to higher ductility.

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Section: Mechanical Behaviorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of SMAT Temperature and Stacking Fault Energy on the Mechanical Properties and Microstructure Evolution of Cu-Al-Zn Alloys

Zhou,

Gong,

Sun

et al. 2023

Metals

View full text Add to dashboard Cite

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Investigating the Impact of Friction Stir Processing on the Hydrogen Embrittlement in AA6082-T6 Heat-Treatable Aluminum Alloy

Papantoniou,

Karmiris-Obratański,

Leszczyńska-Madej

et al. 2024

Met. Mater. Int.

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This study investigates the impact of friction stir processing (FSP) on the hydrogen embrittlement (HE) in AA6082-T6 heat-treatable aluminum alloy. The effects of different number of FSP passes and different hydrogen cathodic charging (HCC) conditions on the material’s response to HE are examined through comprehensive mechanical testing, microhardness analysis, and microstructural characterization. The results revealed that FSP leads to a decrease in yield strength, ultimate tensile strength, and microhardness, accompanied by an increase in energy absorption. The introduction of hydrogen through HCC significantly reduces mechanical properties, particularly in non-FSPed specimens. Notably, specimens with 8 FSP passes exhibit an interesting behavior with a slight increase in energy absorption and microhardness values after HCC. Microstructural analysis shows that FSP refines the microstructure, resulting in enhanced resistance to hydrogen-induced blistering effects. These findings contribute to the understanding of hydrogen embrittlement in FSPed aluminum alloys, providing insights for developing surface-modified materials suited for hydrogen-rich applications. Graphical Abstract

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Influence of Welding Temperature on Microstructure and Crystallographic Texture Evolution in the Different Weld Zones of Underwater Friction Stir Welding of Dissimilar CuZn40 and AA1100-O Alloys

Lader,

Baruah,

Ballav

et al. 2024

Met. Mater. Int.

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Effect of Heterogeneous Lamella Structure on Mechanical Properties of Double-Pass Friction Stir Processed Cu–30%Zn Alloy

Cited by 3 publications

References 77 publications

Effects of SMAT Temperature and Stacking Fault Energy on the Mechanical Properties and Microstructure Evolution of Cu-Al-Zn Alloys

Effects of SMAT Temperature and Stacking Fault Energy on the Mechanical Properties and Microstructure Evolution of Cu-Al-Zn Alloys

Investigating the Impact of Friction Stir Processing on the Hydrogen Embrittlement in AA6082-T6 Heat-Treatable Aluminum Alloy

Influence of Welding Temperature on Microstructure and Crystallographic Texture Evolution in the Different Weld Zones of Underwater Friction Stir Welding of Dissimilar CuZn40 and AA1100-O Alloys

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