Effect of Cu content and Zn/Mg ratio on microstructure and mechanical properties of Al–Zn–Mg–Cu alloys

Li, Yong; Yin, Wanzhong; Lu, Bing; Yu, Wei; Wang, Haiyao; Xu, Guangming; Wang, Zhaodong

doi:10.1016/j.jmrt.2022.06.059

Cited by 36 publications

(4 citation statements)

References 37 publications

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“…The effect of increasing the Zn/Mg ratio in Al-Zn-Mg-Cu alloy castings on the attendant mechanical properties has recently received some attention. 51,58 Limited compositional analysis of the Mg(Zn,Cu,Al) 2 strengthening precipitate particles in the primary Al phase by atom probe tomography shows Cu enrichment in the strengthening precipitate particles. 51 Thus, it is not unreasonable to consider a similar enrichment in strengthening precipitate particles that form on grain boundaries, which in turn would coincide with reduced Cu content in the adjacent precipitate free zone.…”

Section: Discussionmentioning

confidence: 99%

Localized Corrosion of 7xx.x Al Alloy Castings Grain-Refined with Al-5Ti-1B Master Alloy

Kramp¹,

Shankar²,

Kish³

2023

J. Electrochem. Soc.

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The objective of this work was to determine the localized corrosion susceptibility of two artificially-aged 7xx.x Al alloy near net-shaped solidified castings (with a low and high Zn/Mg ratio) that were grain-refined with an Al-5Ti-1B master alloy to reduce hot tearing susceptibility. This was achieved using electrochemical polarization and bulk immersion measurements, coupled with electron microscopy techniques to reveal controlling microstructure aspects associated with corrosion. Both alloys, regardless of temper, exhibited the same corrosion mode: one that involved pit-like corrosion (selective grain attack) that occurred in sequence with the grain boundary region dissolving first, followed by the interdendritic region and then by the dendrite core of the equiaxed dendritic grain structure. The over-aged temper yielded the lowest corrosion susceptibility in terms of the depth of attack observed in cross-section. Of the various coarse eutectic phase particles present, Al2CuMg phase particles were particularly problematic for corrosion.

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Section: Discussionmentioning

confidence: 99%

Localized Corrosion of 7xx.x Al Alloy Castings Grain-Refined with Al-5Ti-1B Master Alloy

Kramp¹,

Shankar²,

Kish³

2023

J. Electrochem. Soc.

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“…Tabel 7 merupakan perbandingan sifat mekanik dari paduan aluminium pada beberapa penelitian. Li et al, (2022) melakukan penelitian aluminium dengan lima paduan yang pada tabel 8. Detail tentang sifat mekanik paduan ditampilkan pada Tabel 9 dan Gambar 2.…”

Section: Pembahasanunclassified

“…Kurva Tegangan-Regangan dari Uji Tarik Tabel 8. Komposisi Paduan Aluminium (Li et al, 2022) Kekuatan tarik menurun dari 543,0 MPa menjadi 490,4 MPa (9,7%) karena rasio Zn/Mg meningkat dari 1,1 menjadi 1,69; hasil kekuatan luluh menurun dari 418,4 MPa menjadi 374,8 MPa (10,4%). Perpanjangan paduan meningkat 8,7% dari 16,1% menjadi 17,5%.…”

Section: Pembahasanunclassified

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Paduan Aluminium Berdasarkan Sifat Mekanik

et al. 2022

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Selama beberapa waktu terakhir paduan aluminium semakin banyak digunakan karena sifat-sifat yang menguntungkan. Kemudian, banyak proyek penelitian dilakukan dengan tujuan untuk mendapatkan lebih banyak pemahaman yang komprehensif tentang kinerja struktural untuk mengembangkan formula desain yang akurat dan andal. Ruang lingkup makalah ini adalah untuk memberikan tinjauan penelitian komprehensif yang dilaporkan pada paduan aluminium. Makalah ini menyajikan gambaran tentang studi penelitian tentang sifat mekanik dengan uji tarik dan uji kekerasan paduan aluminium, serta pengaruh penambahan Cu, Zn, dan Mg untuk memperkuat sifat mekanik dari Al. Hasilnya menunjukkan peningkatan efek penguatan dengan peningkatan kandungan Cu. Sedangkan kekuatan paduan menurun dengan meningkatkan rasio Zn/Mg. Saat kandungan Cu meningkat, kekuatan tarik, hasil kekuatan, dan perpanjangan meningkat. Sedangkan kekuatan tarik, kekuatan luluh, dan kekerasan penurunan dengan peningkatan rasio Zn/Mg.

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Synergetic Effect of Sc Micro-alloying and Low-Frequency Electromagnetic Casting in 7A36 Aluminum Alloy with Enhanced Mechanical and Corrosion Properties

Yang,

Yu,

Chen

et al. 2024

Met. Mater. Int.

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Effect of Cu content and Zn/Mg ratio on microstructure and mechanical properties of Al–Zn–Mg–Cu alloys

Cited by 36 publications

References 37 publications

Localized Corrosion of 7xx.x Al Alloy Castings Grain-Refined with Al-5Ti-1B Master Alloy

Localized Corrosion of 7xx.x Al Alloy Castings Grain-Refined with Al-5Ti-1B Master Alloy

Paduan Aluminium Berdasarkan Sifat Mekanik

Synergetic Effect of Sc Micro-alloying and Low-Frequency Electromagnetic Casting in 7A36 Aluminum Alloy with Enhanced Mechanical and Corrosion Properties

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