Effect of Strain Rate on the Microstructure and Mechanical Properties of AA2B06-O Aluminum Alloy of the Al-Cu-Mg System
文献类型：期刊论文
| 作者 | Khina, B. B.3; Pokrovsky, A., I2; Zhang, Shi-Hong1; Xu, Yong1; Chen, Da-Yong1; Marysheva, A. A.2 |
| 刊名 | RUSSIAN JOURNAL OF NON-FERROUS METALS
 |
| 出版日期 | 2021-09-01 |
| 卷号 | 62期号:5页码:545-553 |
| ISSN号 | 1067-8212 |
| 关键词 | impact hydroforming aluminum alloys high strain rate deformation mechanical properties technological plasticity microstructure dislocations adiabatic microshear bands |
| DOI | 10.3103/S1067821221050060 |
| 通讯作者 | Khina, B. B.(khina_brs@mail.ru) |
| 英文摘要 | The mechanical properties in the tension and microstructure of aviation aluminum alloy AA2B06-O (the Al-Cu-Mg system) at low (10(-3)-1 s(-1)) and high (1293-5045 s(-1)) strain rates are studied. At relatively slow (quasistatic) tension, the stain rate has a small effect on the mechanical properties. Upon fast (dynamic) loading, a raising strain rate results in a substantial, by a factor of about 2, simultaneous increase in the ultimate tensile strength of the alloy and its plasticity (elongation to failure), whereas the yield stress remains almost unchanged. Transmission electron microscopy has revealed a homogeneous nature of plastic deformation on the microlevel upon slow loading and an inhomogeneous one upon fast loading. The latter reveals itself in the localization of deformation in the form of adiabatic microshear bands where complex dislocation structures are formed, such as dislocation tangles and dipole and multipole configurations. In certain domains of microshear bands, the first stage of dynamic recrystallization is observed because of the heat release of localized plastic deformation. It is shown that the changeover of deformation mechanisms when passing from quasistatic to dynamic tension is responsible for the drastic change in mechanical behavior of the material. Thus, a simultaneous increase in both strength and plasticity can take place not only in nanostructured materials obtained by severe plastic deformation techniques, e.g., equal channel angular extrusion, but also upon high strain rate deformation of an aluminum alloy having an ordinary microstructure after rolling and low-temperature annealing. The experimental results open up new prospects for the practical application of methods of high strain rate pulse deformation, such as impact hydroforming, for producing complexly shaped articles made out of sheet blanks by a single operation due to the substantially improved technological plasticity of the material. |
| 资助项目 | Belarussian Republican Foundation for Fundamental Research[T19KITG-001] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | PLEIADES PUBLISHING INC |
| WOS记录号 | WOS:000714928300009 |
| 资助机构 | Belarussian Republican Foundation for Fundamental Research |
| 源URL | [http://ir.imr.ac.cn/handle/321006/167205]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Khina, B. B. |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Natl Acad Sci Belarus, Physicotech Inst, Minsk 220141, BELARUS 3.Belorussian State Aviat Acad, Minsk 220096, BELARUS |
| 推荐引用方式 GB/T 7714 | Khina, B. B.,Pokrovsky, A., I,Zhang, Shi-Hong,et al. Effect of Strain Rate on the Microstructure and Mechanical Properties of AA2B06-O Aluminum Alloy of the Al-Cu-Mg System[J]. RUSSIAN JOURNAL OF NON-FERROUS METALS,2021,62(5):545-553. |
| APA | Khina, B. B.,Pokrovsky, A., I,Zhang, Shi-Hong,Xu, Yong,Chen, Da-Yong,&Marysheva, A. A..(2021).Effect of Strain Rate on the Microstructure and Mechanical Properties of AA2B06-O Aluminum Alloy of the Al-Cu-Mg System.RUSSIAN JOURNAL OF NON-FERROUS METALS,62(5),545-553. |
| MLA | Khina, B. B.,et al."Effect of Strain Rate on the Microstructure and Mechanical Properties of AA2B06-O Aluminum Alloy of the Al-Cu-Mg System".RUSSIAN JOURNAL OF NON-FERROUS METALS 62.5(2021):545-553. |
入库方式： OAI收割
来源：金属研究所
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