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Aging Behavior of As-Extruded ti particles Reinforced VW94 Composites

Acta Metallurgica Sinica(English Letters) 2024年第3期37卷 401-406页

作者： Dongmei Pu Xianhua Chen Jingfeng Wang Jun Tan Jianbo Li Hong Yang Bo Feng Kaihong Zheng Fusheng Pan College of Materials Science and Engineering Chongqing UniversityChongqing 400045China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400045China Institute of New Materials Guangdong Academy of SciencesGuangzhou 510650China

The ageing behavior of as-extruded ti_(P)/VW94 composites was *** peak hardness of the composites increases compared to the matrix alloy and the 5%ti_(P)/VW94 composite presents the highest peak hardness of 148.7 HV after aging for about 50 ***,the hardness increments first decrease and then slightly increase with increasing ti particle content due to the introduction of high-density dislocations by ti particles.

关键词： Magnesium matrix composites ti particles Ageing behavior Hardness

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Effect of ti particles on the Microstructure and Mechanical Properties of AZ91 Magnesium Matrix Composites

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Acta Metallurgica Sinica(English Letters) 2024年第3期37卷 513-524页

作者： Lu Xiao ting-ting Liu Yue Chu Bo Song Jie Zhao Xian-Hua Chen Kai-Hong Zheng Fu-Sheng Pan College of Materials Science and Engineering Chongqing UniversityChongqing 400044China lntelligent Manufacturing and Automobile School Chongqing College of Electronic EngineeringChongqing 401331China School of Materials and Energy Southwest UniversityChongqing 400715China Science and Technology Research Institute of CNNC 404 Co.LTD Gansu 735100China Institute of New Materials Guangdong Academy of SciencesGuangzhou 510650China

Spherical micro-ti particle(tiP)-reinforced AZ91 magnesium alloy composites were fabricated by semi-solid stirring assisted ultrasonic vibration,which were then subjected to hot *** microstructure results showed that the addition of ti particles refined the grain size and decreased the texture intensity of the as-extruded AZ91 *** Al3ti phase with a thickness of 100 nm formed at the ti/Mg interface,which had a non-coherent relationship with the magnesium *** as-extruded 1 vol.%tiP/AZ91 composite exhibited the best comprehensive mechanical properties,with yield strength,ultimate tensile strength,and elongation at break of 366 MPa,456 MPa,and 14.6%,respectively,which were significantly higher than those of the AZ91 ***,the addition of ti particles can improve the strength and ductility of the AZ91 alloy,demonstrating the value of magnesium matrix composites for commercial applications.

关键词： Magnesium matrix composites ti particles Interface Mechanical properties

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Microstructure,mechanical properties and wear resistance of ti particles reinforced AZ31 magnesium matrix composites

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Journal of Magnesium and Alloys 2022年第8期10卷 2266-2279页

作者： Junliu Ye Xianhua Chen Huan Luo Jie Zhao Jianbo Li Jun Tan Hong Yang Bo Feng Kaihong Zheng Fusheng Pan College of Materials Science and Engineering Chongqing UniversityChongqing 400045China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400045China Institute of New Materials Guangdong Academy of SciencesGuangzhou 510650China

The compromise between strength and plasticity has greatly limited the potential application of particles reinforced magnesium matrix composites(MMCs).In this work,the ti particles reinforced AZ31 magnesium(Mg)matrix composites achieved simultaneous improvement in strength,elongation and wear *** ti particles reinforced AZ31 composites were fabricated by ultrasonic-assisted stir casting with hot *** results showed that a strong interfacial bonding was obtained at ti/Mg interface because of the formation of semicoherent orientation relationship of ti Al/Mg,ti Al/Al_(2)ti and Al_(2)ti/Mg *** as-extruded 6 wt.%ti/AZ31 composite presented the best compressive mechanical properties and wear resistance with ultimate tensile strength,elongation and wear rate of 327 MPa,20.4%and 9.026×10^(-3)mm^(3)/m,obviously higher than those of AZ31 *** enhanced mechanical properties were attributed to the grain refinement and strong interfacial *** improved wear resistance was closely related to the increased hardness of composites and the formation of protective oxidation films.

关键词： Magnesium matrix composites ti particles Microstructure Mechanical properties Wear resistance

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Novel titanium particles reinforced Zr-based bulk metallic glass composites prepared by infiltration casting

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Journal of University of Science and Technology Beijing 2008年第4期15卷 505-508页

作者： Cuimei Zhang Xidong Hui Meiling Wang Guoliang Chen State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China

A novel ti/Zr41.2ti13.8Cu12.5Ni10.0Be22.5 composite was successfully prepared by infiltrating the melt into sintered ti preform. It shows that the introduction of ti particles into the composite results in an increase in elastic strain to 3% and an enhancement of the strength up to 2.1 GPa. High specific strength has been obtained because of the decrease in density of the composite. It is suggested that an improvement in the mechanical properties of the composite may be attributed to the generation of multiple shear bands and some deformation in the ti particles.

关键词： melt infiltration bulk metallic-glass ti particles mechanical properties

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Effects of hot extrusion on microstructure and mechanical properties of Mg matrix composite reinforced with deformable TC4 particles

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Journal of Magnesium and Alloys 2020年第2期8卷 421-430页

作者： Xiaojun Wang Xiaoming Wang Xiaoshi Hu Kun Wu School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China

Mg matrix composites were often reinforced by non-deformable ceramic *** this paper,a novel Mg matrix composite reinforced with deformable TC4(ti-6Al-4 V)particles was fabricated and then *** evolutions of microstructure and mechanical properties of the composite during hot extrusion were *** extrusion refined giains and eliminated the segregation of TC4 ***4 particles,as deformable particles,stimulated the nucleation of dynamic recrystallization during ***,since the deformation of TC4 particles partly released the stress concentrations around them,the recrystallized grains are just slightly smaller around TC4 particles than that away from them,which is evidently different from the case in Mg matrix composites reinforced by non-deformable ceramic *** with AZ91 matrix composites reinforced by SiC particles,the present composite possesses the superior comprehensive mechanical properties,which are attributed to not only the strong interfacial bonds between TC4p and matrix but also the deformability of TC4 particles.

关键词： Mg matrix composites ti particles Hot extrusion Mechanical properties

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