Yun-ya Zhang

Central South University

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Yunlai Deng

Shanghai Institute of Technology

Wan Li

Shaanxi University of Science and Technology

Xinming Zhang

Central South University

Long Chen

Nanjing University of Science and Technology

Keda Jiang

Central South University

Li Wan

Nanchang University

QI Xiaohong

Guizhou Electromechanical Research and Design Institute

Zhang Xin-ming

Central South University

Song Manxin

Bao Zi-cheng

Central South University

Cooperative Institutions

Central South University

Chongqing University

Huazhong University of Science and Technology

Ministry of Education of the People's Republic of China

Nanjing University of Science and Technology

Guangzhou Medical University

Hunan University

Jiangsu University

University of Macau

Ministry of Natural Resources

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Influence of sub-grain boundaries on quenching process of an Al-Zn-Mg-Cu alloy

Transactions of Nonferrous Metals Society of China (2014)

Keda Jiang Long Chen Yun-ya Zhang Yunlai Deng

Recrystallization (geology)

Precipitation hardening

Grain boundary strengthening

10.1016/s1003-6326(14)63321-5

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Citations (5)

Effects of Trace Sc on the Evolution of Microstructure and Texture of Al-Zn-Mg-Cu Alloys

Cailiao yanjiu xuebao (2012)

Yun-ya Zhang Yunlai Deng QI Xiaohong Song Manxin Zhang Xin-ming

Two alloys with the different components of trace elements were prepared, and the effects of Sc on the microstructure and texture of Al-Zn-Mg-Cu alloys during hot deformation and solution treatment were investigated. Comparing with the alloy containing only trace Zr, alloy containing trace Sc and trace Zr exhibited following characteristics: after hot deformation, there are smaller sub-grains in the alloy; after solution treatment, the alloy has lower recrystalization fraction, and the density of {011}� 211� (B-) orientation is stronger, while the density of {112}� 111� (C-) orientation is weaker. For this reason above all-Al3(Sc, Zr) particles formed during homogenization distribute uniformly in both inner grain areas and grain boundary areas, which severely prohibited the migration of dislocations and grain boundaries during hot deformation and solution treatment. Because of interfacial energy offered from sub-grain boundaries, the precipitation behavior of MgZn2 was promoted. The promotion and strengthen of sub-microstructural result in increase of the final hardness of alloys with the different components of trace elements by 11.3%.

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Citations (1)

Influence of Mg content on quench sensitivity of Al–Zn–Mg–Cu aluminum alloys

Journal of Alloys and Compounds (2011)

Yunlai Deng Wan Li Yun-ya Zhang Xinming Zhang

Precipitation hardening

Hardening (computing)

10.1016/j.jallcom.2011.01.147

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Citations (79)

Effect of Al3Zr precipitation on microstructures and textures of Al-7.81Zn-1.62Mg-1.81Cu alloy plates

The Chinese Journal of Nonferrous Metals (2011)

Bao Zi-cheng Li Wan Yun-ya Zhang Yunlai Deng

The precipitation behaviours of the Al3Zr particles during three-staged homogenizations and the effect of precipitation status of the Al3Zr particles on the microstructures and textures of the rolled plates were investigated.The results show that the precipitation behaviours of the MgZn2 and Al3Zr particles are evidently affected by the heating temperatures during the second stage of the three-staged homogenizations.Lots of rod particles of the MgZn2 equilibrium phase as the heterogeneous nuclei of precipitating Al3Zr particles improve the homogeneity precipitation of the Al3Zr particles within the grains and on the grain boundary.The homogeneous Al3Zr precipitation can weaken the {112} 111and {123}634 textures along the β-fiber,inhibit the {001} 100 recrystallization texture and decrease the area and volume fraction of the recrystallization grains.

Recrystallization (geology)

Volume fraction

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Citations (0)

Three-Stage Homogenization of Al-Zn-Mg-Cu Alloys Containing Trace Zr

Metallurgical and Materials Transactions A (2013)

Yunlai Deng Yun-ya Zhang Wan Li Alf A. Zhu Xinming Zhang

Homogenization

Recrystallization (geology)

10.1007/s11661-013-1639-5

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Citations (39)