Effects of Zr-addition on intergranular fracture of Al–Cu–Mg and Al–Zn–Mg–Cu alloys
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- Ohte Rina
- Graduate Student, Graduate School of Engineering, Osaka Prefecture University
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- Yoshioka Koji
- Graduate Student, Graduate School of Engineering, Osaka Prefecture University
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- Uesugi Tokuteru
- Graduate School of Engineering, Osaka Prefecture University
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- Takigawa Yorinobu
- Graduate School of Engineering, Osaka Prefecture University
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- Higashi Kenji
- Graduate School of Engineering, Osaka Prefecture University
Bibliographic Information
- Other Title
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- Al–Cu–Mg合金とAl–Zn–Mg–Cu合金の粒界破壊に及ぼすZr添加の影響
- Al-Cu-Mg ゴウキン ト Al-Zn-Mg-Cu ゴウキン ノ リュウカイ ハカイ ニ オヨボス Zr テンカ ノ エイキョウ
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Abstract
<p>Effects of Zr addition on the intergranular fracture of Al–Cu–Mg and Al–Zn–Mg–Cu alloys were investigated. The alloys were Al–4.6 mass%Cu–1.5 mass%Mg (−0.17 mass%Zr) and Al–7.5 mass%Zn–2.9 mass%Mg–2.0 mass%Cu (−0.2 mass% Zr). All alloys were synthesized using high-purity aluminum with more than 99.999 mass%. The grain size and hardness of each alloy were made consistent by annealing and further aging treatment, respectively. It was revealed that the Zr addition suppresses intergranular fracture and improves the ductility under the condition that the grain size and hardness are the same. These effects of Zr addition appeared near the transition region from transgranular fracture to intergranular fracture. The first-principles calculation results indicated that Zr is the only element which segregates to the grain boundary and strengthens the grain boundary among alloying elements of Zn, Mg, Cu, and Zr in aluminum.</p>
Journal
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- Journal of Japan Institute of Light Metals
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Journal of Japan Institute of Light Metals 69 (4), 235-241, 2019-04-30
The Japan Institute of Light Metals
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Details 詳細情報について
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- CRID
- 1390564238097096448
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- NII Article ID
- 130007655550
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- NII Book ID
- AN00069773
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- ISSN
- 18808018
- 04515994
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- NDL BIB ID
- 029658513
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed