Zhiping Xiong

Dynamic mechanical properties and microstructures of pure iron and Fe-30Mn-3Si-4Al TWIP (TWinning Induced Plasticity) steel were conducted by SHPB (Split-Hopkinson Pressure Bar), OM (Optical Microscopy) and TEM (Transmission Electron Microscope), at the strain rate ranging from 10 2 to 10 5 s -1 and at room temperature. The effect of high strain rate on the mechanical responses of pure iron and Fe-30Mn-3Si-4Al TWIP steel belonging to BCC (Body Centered Cubic) and FCC (Face Centered Cubic) structures respectively was evaluated. The comparison of deformation mechanism was analyzed between them and it concluded that dislocation gliding is a major deformation mechanism in pure iron with BCC structure and deformation twinning plays a significant role in Fe-30Mn-3Si-4Al TWIP steel with FCC structure.

Twip

Deformation mechanism

10.4028/www.scientific.net/amm.692.179

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Citations (3)

Evolution of microstructures and mechanical properties with tempering temperature of a pearlitic quenched and tempered steel

Journal of Iron and Steel Research International (2021)

Dezhen Yang Zhiping Xiong Chao Zhang Guan-zheng Feng Cheng Zhi-fang

Tempering

Lath

Ductility (Earth science)

10.1007/s42243-021-00677-0

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Citations (16)

Thermal Stability and Strengthening Effect of Coherent Precipitates in a (FeCoNi)92Al2.5Ti5.5 High Entropy Alloy

Acta Metallurgica Sinica (English Letters) (2024)

Yuqi Liu Feng Wang Songyang Chen Hui Wang Zhiping Xiong

Atom probe

High-Entropy Alloys

Thermal Stability

10.1007/s40195-024-01727-8

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Citations (2)

Effect of rolling temperature and reduction on brick-and-mortar Ti2Ni/TiNi composite

Transactions of Nonferrous Metals Society of China (2023)

Jia Chen Zhiping Xiong Dezhen Yang Yangwei Wang Xingwang Cheng

The brick-and-mortar Ti2Ni/TiNi composite, composed of Ti2Ni bricks distributed among TiNi mortars, was successfully produced by hot rolling laminated Ti2Ni/TiNi composite. The rolling temperature and reduction have large effects on brick width and brick interspacing, respectively. When the compression is carried out perpendicular to the stacking direction, all the samples exhibit delamination fracture, which is harmful to mechanical performances. When loading is parallel to the stacking direction, too large brick width and too small brick interspacing both boost the delamination between brittle Ti2Ni and ductile TiNi. After 60% rolling at 700 °C, the brick-and-mortar composite exhibits a largest strength of (1923.11±70.78) MPa and a largest fracture strain of 0.190±0.017 because suitable brick width and interspacing inhibit the delamination and promote crack deflection. Further optimization of mechanical properties can be achieved by the adjustment of brick width and interspacing.

Brick

Delamination

Brittleness

10.1016/s1003-6326(23)66244-2

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Citations (2)

Friction and wear behaviors of B4C/6061Al composite

Materials & Design (1980-2015) (2014)

Yuhai Dou Yong Liu Yanbin Liu Zhiping Xiong Qingbing Xia

Delamination

Fretting Wear

Matrix (chemical analysis)