Guangli Bi

article

A Rapidly Degradable Extruded Mg–Y–Zn–Ni Alloy for Fracturing Tool Applications

Guangli Bi, Maocao Le, Jing Jiang, Baiyu Li, more

Advanced Engineering Materials > 25 > 12 > n/a - n/a

Microstructure evolution, mechanical properties, and degradation behavior of a rapidly degradable extruded Mg–2Y–0.5Zn–0.5Ni (at%) alloy for fracturing tool applications are investigated. The microstructure of the extruded alloy is mainly composed of a recrystallization region and a nonrecrystallization region, in which the 18 R‐long‐period stacking order (LPSO) phase with two kinds of morphologies...

article

Strain Rate Dependence of Tensile Properties of Extruded Mg–9Y–3Zn–1Mn Alloy

Xiaoru Zhang, Zehui Wang, Yue Jiang, Guixun Sun, more

Advanced Engineering Materials > 20 > 9 > n/a - n/a

Tensile mechanical properties of an extruded Mg–9Y–3Zn–1Mn alloy are investigated at a wide range of strain rates. It is demonstrated that the tensile ductility of the alloy exhibits a pronounced strain rate dependence, while its tensile strength is less sensitive to strain rate. As strain rate decreases from

10^{- 1} s^{- 1}

to

10^{- 6} s^{- 1}

, the yield and ultimate tensile strengths of the alloy only decrease...

article

Nanoindentation creep behavior of coarse-grained and ultrafine-grained pure magnesium and AZ31 alloy

Jiangjiang Hu, Wei Zhang, Guangli Bi, Jinwen Lu, more

Materials Science and Engineering: A > 2017 > 698 > C > 348-355

Ultrafine-grained (UFG) pure magnesium and AZ31 alloy were prepared by sliding friction treatment (SFT). Nanoindentation tests of UFG Mg and AZ31 alloy were performed under a wide range of loading strain rates from 0.004/s to 0.4/s with a holding time of 500s at room temperature to study the grain size and alloy element influence on the creep behavior and the corresponding deformation mechanisms....

article

Microstructure evolution and corrosion properties of Mg-Dy-Zn alloy during cooling after solution treatment

Guangli BI, Jing JIANG, Fan ZHANG, Daqing FANG, more

Journal of Rare Earths > 2016 > 34 > 9 > 931-937

Microstructure evolution and corrosion properties of Mg-2Dy-0.5Zn (at.%) alloy during cooling after solution treatment were investigated. The microstructure of alloy in the solid solution state (530 °C, 12 h) was composed of α-Mg and small amounts of (Mg, Zn)_xDy phases. During cooling at a cooling rate of 2 °C/min, the 14H-type LPSO phase gradually precipitated in the grain interior and its volume...

article

Dry sliding wear behavior of an extruded Mg–Dy–Zn alloy with long period stacking ordered phase

Guangli Bi, Yuandong Li, Xiaofeng Huang, Tijun Chen, more

Journal of Magnesium and Alloys > 2015 > 3 > 1 > 63-69

The dry sliding wear behavior of extruded Mg-2Dy-0.5Zn alloy (at.%) was investigated using a pin-on-disk configuration. The friction coefficient and wear rate were measured within a load range 20–760 N at a sliding velocity of 0.785 m/s. Microstructure and wear surface of alloy were examined using scanning electron microscopy. The mechanical properties of alloy were tested at room and elevated temperatures...

article

Deformation behavior of an extruded Mg–Dy–Zn alloy with long period stacking ordered phase

Guangli Bi, Yuandong Li, Xiaofeng Huang, Tijun Chen, more

Materials Science and Engineering: A > 2015 > 622 > C > 52-60

Deformation behavior of an extruded Mg–2Dy–0.5Zn (at%) alloy was investigated under uniaxial tensile test at a range of strain rates of 3×10⁻⁵–3×10⁻¹s⁻¹ and temperature ranging from room temperature (RT) to 300°C. The microstructure of the alloy was mainly composed of α-Mg, (Mg, Zn)_xDy particle phase and a large number of long period stacking ordered (LPSO) phases. The tensile testing results indicated...

article

Dry sliding wear behavior of extruded Mg-Sn-Yb alloy

Jing JIANG, Guangli BI, Lei ZHAO, Rongguang LI, more

Journal of Rare Earths > 2015 > 33 > 1 > 77-85

The dry sliding wear behavior of extruded Mg-9Sn and Mg-9Sn-3Yb alloys through pin-on-disc configuration was investigated at room temperature. Coefficient of friction, wear rate and wear resistance of extruded Mg-9Sn and Mg-9Sn-3Yb alloys were measured within a load range of 20–240 N and 20–380 N at a sliding velocity of 0.785 m/s, respectively. The wear tracks, worn surface and wear edge were observed...

article

Microstructures and mechanical properties of extruded Mg–2Sn–xYb (x=0, 0.1, 0.5 at.%) sheets

Jing Jiang, Guangli Bi, Jiaan Liu, ChunChun Ye, more

Journal of Magnesium and Alloys > 2014 > 2 > 3 > 257-264

Microstructures and mechanical properties of extruded Mg–2Sn–xYb (x = 0, 0.1, 0.5 at.%) sheets were investigated. The grain size of as-cast Mg–2Sn alloy is significantly reduced with increasing Yb concentration. In addition to α-Mg and Mg ₂ Sn phase, some fine Mg ₂ (Sn,Yb) particles are observed in as-cast Mg–2Sn–0.5Yb alloy, but these fine particles are not observed in as-cast Mg–2Sn–0...

article

Strain-hardening and warm deformation behaviors of extruded Mg–Sn–Yb alloy sheet

Jing Jiang, Guangli Bi, Guoyong Wang, Qing Jiang, more

Journal of Magnesium and Alloys > 2014 > 2 > 2 > 116-123

Strain-hardening and warm deformation behaviors of extruded Mg–2Sn–0.5Yb alloy (at.%) sheet were investigated in uniaxial tensile test at temperatures of 25–250 °C and strain rates of 1 × 10 ⁻³ s ⁻¹ –0.1 s ⁻¹ . The data fit with the Kocks–Mecking type plots were used to show different stages of strain hardening. Besides III-stage and IV-stage, the absence of the II-stage strain...

article

Microstructure, mechanical and corrosion properties of Mg–2Dy–xZn (x=0, 0.1, 0.5 and 1 at.%) alloys

Guangli Bi, Yuandong Li, Shijun Zang, Jianbin Zhang, more

Journal of Magnesium and Alloys > 2014 > 2 > 1 > 64-71

Microstructure, mechanical and corrosion properties of as-cast Mg–2Dy-xZn (x = 0, 0.1, 0.5, and 1) (at.%) alloys were investigated. The microstructures of the as-cast Mg–2Dy and Mg–2Dy–0.1Zn alloys mainly consisted of α-Mg phase and Mg ₂₄ Dy ₅ eutectic phase. With 0.5 at.% Zn addition, Mg ₁₂ ZnDy phase with 18R-type long period stacking ordered (LPSO) structure and Mg ₂...

article

Strengthening Precipitate, Thermal Stability, and Mechanical Properties of Melt-Spun Mg-8Gd-3Nd Alloy

Yanping Fan, Qiuming Peng, Junling Pan, Guangli Bi, more

Journal of Materials Engineering and Performance > 2014 > 23 > 1 > 250-254

Ribbons of melt-spun Mg-8Gd-3Nd (wt.%) alloy with different circumferential velocities ranging from 20 to 40 m/s were prepared. The phase composition and transformation were studied using x-ray diffraction, differential scanning calorimetry, and transmission electron microscopy. The ribbon of 40 m/s exhibited two exothermic peaks in the temperature range from 600 to 850 K, which corresponded to some...

article

Influences of Y and Y-Rich Mischmetal Additions on Microstructure and Compressive Properties of As-Cast Al-Mg-Mn Alloy

Daqing Fang, Guangli Bi, Jing Jiang, Qiuming Peng, more

Journal of Materials Engineering and Performance > 2013 > 22 > 4 > 1201-1207

The influences of Y and Y-rich mischmetal (Ym) additions on microstructural and compressive properties of as-cast Al-13Mg-0.8Mn alloy prepared by vacuum suction casting were investigated in this study. The average secondary dendrite arm spacing (SDAS) was decreased when adding Y and Ym additions. Moreover, the Al₂Y and Al₂Ym phases formed during the solidification were mainly distributed along the...

article

Microstructure and Mechanical Properties of an Extruded Mg-2Dy-0.5Zn Alloy

Guangli Bi, Daqing Fang, Weichuan Zhang, Jothi Sudagar, more

Journal of Materials Science & Technology > 2012 > 28 > 6 > 543-551

Microstructure and mechanical properties of an extruded Mg-2Dy-0.5Zn (at.%) alloy during isothermal ageing at 180 °C were investigated. Microstructure of the as-extruded alloy is mainly composed of a-Mg phase, 14H long period stacking order (LPSO) phase and small amounts of (Mg, Zn) _x Dy particle phases. During ageing, the 14H LPSO phase forms and develops and its volume fraction increases...

article

Self-assembly growth and electron work function of copper phthalocyanine films on indium tin oxide glass

Mingshan Xue, Zhonghao Jiang, Wen Li, Guangli Bi, more

Applied Surface Science > 2012 > 258 > 8 > 3373-3377

Organic semiconductor materials are becoming a promising subject of not only scientific interest but also potential applications in the field of new energy resources. In this study, the copper phthalocyanine (CuPc) films as an excellent organic semiconductor were self-assembly grown on indium tin oxide glass by electrodeposition, the structural and electronic properties were investigated using various...

article

Double-peak ageing behavior of Mg–2Dy–0.5Zn alloy

Guangli Bi, Daqing Fang, Lei Zhao, Qingxin Zhang, more

Journal of Alloys and Compounds > 2011 > 509 > 32 > 8268-8275

Ageing behavior of Mg–2Dy–0.5Zn alloy was investigated during isothermal ageing at 180°C. Two significant ageing peaks were observed at 36h and 80h, respectively. Examination of microstructure evolution during ageing revealed that 14H long period stacking ordered (LPSO) phase forms in the α-Mg matrix and its volume fraction increases, (Mg, Zn) _x Dy particle phases precipitate and their size,...

article

An elevated temperature Mg–Dy–Zn alloy with long period stacking ordered phase by extrusion

Guangli Bi, Daqing Fang, Lei Zhao, Jianshe Lian, more

Materials Science & Engineering A > 2011 > 528 > 10-11 > 3609-3614

A Mg–2Dy–0.5Zn (at.%) alloy was prepared by casting, heat treating at 525°C for 10h, extruding at 360°C and ageing at 180°C for 90h. Microstructure characterization revealed that this alloy consists of the fine-grained α-Mg matrix composed nearly of the 14H long period stacking ordered (LPSO) phase and a small amount of (Mg, Zn) _x Dy precipitations. Tensile tests showed that the yield and...

article

Microstructures and mechanical properties of Mg–2Y–1Mn–1–2Nd alloys fabricated by extrusion

Daqing Fang, Guangli Bi, Limin Wang, Guangyu Li, more

Materials Science & Engineering A > 2010 > 527 > 16-17 > 4383-4388

Microstructures and mechanical properties of the extruded Mg–2Y–1Mn–1Nd and Mg–2Y–1Mn–2Nd alloys were investigated. The coarse Mg ₁₂ Nd phase particles and fine Mg ₂₄ Y ₅ precipitations form in the Mg–2Y–1Mn–2Nd alloy and distribute at the grain boundaries and in the grain interior, but were not observed in the Mg–2Y–1Mn–1Nd alloy due to its relatively lower Nd content. Tensile...

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Search results for: Guangli Bi

A Rapidly Degradable Extruded Mg–Y–Zn–Ni Alloy for Fracturing Tool Applications

Strain Rate Dependence of Tensile Properties of Extruded Mg–9Y–3Zn–1Mn Alloy

Nanoindentation creep behavior of coarse-grained and ultrafine-grained pure magnesium and AZ31 alloy

Microstructure evolution and corrosion properties of Mg-Dy-Zn alloy during cooling after solution treatment

Dry sliding wear behavior of an extruded Mg–Dy–Zn alloy with long period stacking ordered phase

Deformation behavior of an extruded Mg–Dy–Zn alloy with long period stacking ordered phase

Dry sliding wear behavior of extruded Mg-Sn-Yb alloy

Microstructures and mechanical properties of extruded Mg–2Sn–xYb (x=0, 0.1, 0.5 at.%) sheets

Strain-hardening and warm deformation behaviors of extruded Mg–Sn–Yb alloy sheet

Microstructure, mechanical and corrosion properties of Mg–2Dy–xZn (x=0, 0.1, 0.5 and 1 at.%) alloys

Strengthening Precipitate, Thermal Stability, and Mechanical Properties of Melt-Spun Mg-8Gd-3Nd Alloy

Influences of Y and Y-Rich Mischmetal Additions on Microstructure and Compressive Properties of As-Cast Al-Mg-Mn Alloy

Microstructure and Mechanical Properties of an Extruded Mg-2Dy-0.5Zn Alloy

Self-assembly growth and electron work function of copper phthalocyanine films on indium tin oxide glass

Double-peak ageing behavior of Mg–2Dy–0.5Zn alloy

An elevated temperature Mg–Dy–Zn alloy with long period stacking ordered phase by extrusion

Microstructures and mechanical properties of Mg–2Y–1Mn–1–2Nd alloys fabricated by extrusion

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