H. T. Wang

Henan Polytechnic University

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Yongheng Xue

Henan Polytechnic University

F. Liu

Shandong University of Technology

Y. Z. Chen

Beijing Fengtai Hospital

Ling Ji

China National Petroleum Corporation (China)

X. Zhang

Lanzhou University of Technology

Yandong Liu

Gansu University of Traditional Chinese Medicine

C. X. Chen

Hebei University of Technology

Mengmeng Tong

Dongguan University of Technology

Guangliang Zhou

China West Normal University

J. M. Zhang

China National Petroleum Corporation (China)

Cooperative Institutions

Northwestern Polytechnical University

Xi'an Jiaotong University

Central South University

Henan Polytechnic University

Xi'an Technological University

Southwest Jiaotong University

Zhejiang University

China National Petroleum Corporation (China)

Nanjing University of Aeronautics and Astronautics

Shandong University of Technology

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The Microstructure Evolution of Dual-Phase Pipeline Steel with Plastic Deformation at Different Strain Rates

Journal of Materials Engineering and Performance (2017)

Ling Ji Tao Xu J. M. Zhang H. T. Wang Mengmeng Tong

Ductility (Earth science)

Elongation

Deformation bands

10.1007/s11665-017-2694-7

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Citations (5)

Numerical Simulation of the Mechanical Properties and Fracture of SiCp/6061Al Composite Materials Based on Microstructure

Metals (2023)

H. T. Wang Guoliang Ji Yongheng Xue Yandong Liu

SiCp/6061Al composites with volume fractions of 5%, 10%, and 15% were prepared by the vacuum hot pressing sintering. Their microstructure and fracture morphology were observed and analyzed with an optical microscope and a scanning electron microscope. The elastic–plastic behavior of the 6061Al matrix in the composites was studied by using the load–displacement curve obtained by the nanoindentation test, and the plastic constitutive equation was established. The representative volume element (RVE) model was established based on the geometric characteristics of the SiC particles identified by using image processing technology from the metallographic structure. The deformation and fracture process of the SiCp/6061Al composites under the uniaxial tensile load was simulated microscopically, and the microscopic deformation and fracture characteristics and mechanical properties of SiCp/6061Al composites under different interface strengths and different SiCp volume fractions were revealed.

Tensile testing

Representative elementary volume

Volume fraction

10.3390/met13061016

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Breaking through the strength-ductility trade-off dilemma in an Al-Si-based casting alloy

Scientific Reports (2016)

Bo Dang X. Zhang Y. Z. Chen C. X. Chen H. T. Wang

Al-Si-based casting alloys have a great potential in various industrial applications. Common strengthening strategies on these alloys are accompanied inevitably by sacrifice of ductility, known as strength-ductility trade-off dilemma. Here, we report a simple route by combining rapid solidification (RS) with a post-solidification heat treatment (PHT), i.e. a RS + PHT route, to break through this dilemma using a commercial Al-Si-based casting alloy (A356 alloy) as an example. It is shown that yield strength and elongation to failure of the RS + PHT processed alloy are elevated simultaneously by increasing the cooling rate upon RS, which are not influenced by subsequent T6 heat treatment. Breaking through the dilemma is attributed to the hierarchical microstructure formed by the RS + PHT route, i.e. highly dispersed nanoscale Si particles in Al dendrites and nanoscale Al particles decorated in eutectic Si. Simplicity of the RS + PHT route makes it being suitable for industrial scaling production. The strategy of engineering microstructures offers a general pathway in tailoring mechanical properties of other Al-Si-based alloys. Moreover, the remarkably enhanced ductility of A356 alloy not only permits strengthening further the material by work hardening but also enables possibly conventional solid-state forming of the material, thus extending the applications of such an alloy.

Ductility (Earth science)

10.1038/srep30874

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Citations (84)