NDLI: Microstructure, Mechanical Properties and Fracture Behavior of As-Extruded Zn

Content Provider	Springer Nature Link
Author	Sun, Shi Neng Li, Song Qin, Gao Wu Ren, Yu Ping Wang, Li Qing Zhao, Hong
Copyright Year	2017
Abstract	In the present work, Zn–(0–1)Mg (wt%) alloys were prepared by casting and indirect extrusion at 200 and 300 °C, respectively. With Mg addition, both the size and amount of second phase Mg$_{2}$Zn$_{11}$ increased, and the equiaxed grains were significantly refined. The extrusion temperature had little influence on Mg$_{2}$Zn$_{11}$, but the grains were refined at low extrusion temperature. For the alloys extruded at 200 °C, as Mg content increased, the tensile yield strength (TYS) increased from 64 MPa for pure Zn to 262 MPa for Zn–1Mg; the elongation increased from 14.3% for pure Zn to 25% for Zn–0.02Mg and then decreased to 5% for Zn–1Mg. For the alloys extruded at 300 °C, as Mg content increased, the TYS increased from 67 MPa for pure Zn to 252 MPa for Zn–1Mg, while the elongation decreased from 11.7% to 2%. The alloy extruded at 200 °C exhibited higher TYS and elongation than the corresponding alloy extruded at 300 °C. The combination of grain refinement and second phase Mg$_{2}$Zn$_{11}$ contributed to the improvement in the TYS, and the grain refinement played a major role in strengthening alloy. Zn–0.02Mg and Zn–0.05Mg alloys extruded at 200 °C show a mixture of cleavage and ductile fracture corresponding to higher elongation, while the other alloys show cleavage fracture.
Starting Page	931
Ending Page	940
Page Count	10
File Format	PDF
ISSN	10067191
Journal	Acta Metallurgica Sinica (English Letters)
Volume Number	30
Issue Number	10
e-ISSN	21941289
Language	English
Publisher	The Chinese Society for Metals
Publisher Date	2017-04-26
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Spectroscopy/Spectrometry Indirect extrusion Tribology, Corrosion and Coatings Mechanical property Organometallic Chemistry Zn–Mg binary alloy Characterization and Evaluation of Materials Metallic Materials Microstructure Fracture behavior Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Metals and Alloys

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