Microstructure and mechanical properties of an indirect-extruded Mg–8Sn–1Al–1Zn alloy

Park, S.S.; Tang, Wei; You, Bong Sun

doi:10.1016/j.matlet.2009.09.062

Cited by 66 publications

(19 citation statements)

References 7 publications

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“…Furthermore, it has been recently reported that fine precipitates formed during extrusion play a significant role in suppressing grain growth through pinning, thereby resulting in a remarkably refined grain structure [18]. Hence, grain boundary pinning by the dispersed Mg 2 Sn precipitates evident in the micro-beam diffraction pattern will also contribute to the formation of an ultrafine grain structure; the shape and size of these Mg 2 Sn precipitates are consistent with previous results relating to indirectly extruded TAZ811 alloys [5,19]. The 10% CPF extruded alloy exhibits excellent tensile properties with a TYS of 387 MPa, a UTS of 403 MPa, and an EL of 7.9%, which are significantly higher than the 343 MPa TYS, 363 MPa UTS, and 6.4% EL of the non-CPF extruded alloy.…”

Section: Resultssupporting

confidence: 89%

“…This high extrudability of Mg-Sn based alloys is attributed to an increase in their thermal stability by the formation of a high melting point Mg 2 Sn phase (773 °C) rather than Mg-Al or Mg-Zn phases. Furthermore, TAZ811 exhibits extremely low tension-compression yield asymmetry and a higher tensile and compressive strength than the AZ31 alloy extruded under the same conditions [5]. These superior mechanical properties of TAZ811 are mainly due to its fine grain size and the dispersion of fine Mg 2 Sn particles.…”

Section: Introductionmentioning

confidence: 95%

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Effect of cold pre-forging on the microstructure and mechanical properties of extruded Mg–8Sn–1Al–1Zn alloy

Park

Lee

et al. 2014

Materials Science and Engineering: A

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Section: Resultssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 95%

Effect of cold pre-forging on the microstructure and mechanical properties of extruded Mg–8Sn–1Al–1Zn alloy

Park

Lee

et al. 2014

Materials Science and Engineering: A

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“…Fig. 11 summarizes the yield strengths and elongation to failure of various Mg based wrought alloys fabricated by conventional ingot metallurgy process [2,5,6,[9][10][11]15,16,18,[40][41][42][43][44][45][46][47][48][49][50]. The TZAM6620 alloy developed in this work showed better strength-ductility balance compared to previously studied Mg-Sn based alloys and the other commercially available wrought alloys such as Mg-Al-Zn and Mg-Zn alloys.…”

Section: Discussionmentioning

confidence: 99%

Strong and ductile heat-treatable Mg–Sn–Zn–Al wrought alloys

et al. 2015

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a b s t r a c tA newly developed Mg-Sn-Zn-Al based alloy shows substantial strengthening by artificial aging. A Na-doped Mg-5.4Sn-4.2Zn-2.0Al-0.2Mn-0.1Na (TZAM5420À0.1Na) (wt.%) alloy exhibited a significant increase in yield strength from 243 to 347 MPa by a T6 treatment due to the uniform dispersion of nanoscale precipitates by aging. The trace addition of Na causes the formation of Sn-Na co-clusters in the early stage of aging, which provides heterogeneous nucleation sites for Mg 2 Sn precipitates. However, Na strongly segregates at grain boundaries and this degrades the ductility significantly. To overcome this problem, we developed a Na-free Mg-6.6Sn-5.9Zn-2.0Al-0.2Mn (TZAM6620) alloy, in which nano-scale MgZn 2 precipitates are uniformly dispersed by double aging. Pre-aging caused the formation of Zn-rich Guinier Preston zones, which acted as heterogeneous nucleation sites for the MgZn 2 precipitates. The double-aged TZAM6620 alloy exhibited a very high yield strength of 370 MPa with large elongation of 14%.

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“…The XRD results given in Fig. 2 indicate that the main second phase in the extruded alloys is Mg2Sn, as typically observed in Mg-Sn based alloys [16,[27][28][29][30]. From Fig.…”

Section: Hemolysis Testsmentioning

confidence: 54%

Microstructure, mechanical properties, corrosion behavior and hemolysis of as-extruded biodegradable Mg-Sn-Zn alloy

Hou

Zhong

Pan

et al. 2016

AIP Conference Proceedings

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Synthesis of biodegradable Mg-Zn alloy using mechanical alloying: Effect of ball to powder weight ratio AIP Conference Proceedings 1756, 020001 (2016) and mechanical properties, as well as good biocompatibility, and are expected to totally biodegrade in the body environment. The microstructure mechanical properties, corrosion behaviors and hemolysis of biodegradable Mg-Sn-Zn alloy were investigated under three extrusion ratios in the present work. It is revealed that the as-extruded microstructure is obviously refined with smaller grains compared with the as-cast structure while some twins form simultaneously. The tensile strengths of the as-extruded alloys fabricated with the higher extrusion ratio is 249MPa, and elongations is 16.3% respectively. Besides, the corrosion rate of as-extruded magnesium alloys increases with the increasing extrusion ratio. The hemolysis test result shows that the hemolysis rate of biodegradable magnesium alloys fabricated with the higher extrusion ratio is 4.8%, when hemolysis rate lower than 5% has been demonstrated safe according to ISO 10993-4. In conclusion, the as-extruded biodegradable Mg-Sn-Zn alloy shows great potential as a novel medical implant material.

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Microstructure and mechanical properties of an indirect-extruded Mg–8Sn–1Al–1Zn alloy

Cited by 66 publications

References 7 publications

Effect of cold pre-forging on the microstructure and mechanical properties of extruded Mg–8Sn–1Al–1Zn alloy

Effect of cold pre-forging on the microstructure and mechanical properties of extruded Mg–8Sn–1Al–1Zn alloy

Strong and ductile heat-treatable Mg–Sn–Zn–Al wrought alloys

Microstructure, mechanical properties, corrosion behavior and hemolysis of as-extruded biodegradable Mg-Sn-Zn alloy

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