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Shao XH, Zheng SJ, Chen D, et al. Deformation twinning induced decomposition of lamellar LPSO structure and its re-precipitation in an Mg-Zn-Y alloy. Sci Rep. 2016;6:30096doi: 10.1038/srep30096.
Shao, X. H., Zheng, S. J., Chen, D., Jin, Q. Q., Peng, Z. Z., & Ma, X. L. (2016). Deformation twinning induced decomposition of lamellar LPSO structure and its re-precipitation in an Mg-Zn-Y alloy. Scientific reports, 630096. https://doi.org/10.1038/srep30096
Shao, X H, et al. "Deformation twinning induced decomposition of lamellar LPSO structure and its re-precipitation in an Mg-Zn-Y alloy." Scientific reports vol. 6 (2016): 30096. doi: https://doi.org/10.1038/srep30096
Shao XH, Zheng SJ, Chen D, Jin QQ, Peng ZZ, Ma XL. Deformation twinning induced decomposition of lamellar LPSO structure and its re-precipitation in an Mg-Zn-Y alloy. Sci Rep. 2016 Jul 20;6:30096. doi: 10.1038/srep30096. PMID: 27435638; PMCID: PMC4951811.
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Sci Rep. 2016 Jul 20;6:30096. doi: 10.1038/srep30096.

Deformation twinning induced decomposition of lamellar LPSO structure and its re-precipitation in an Mg-Zn-Y alloy.

Scientific reports

X H Shao, S J Zheng, D Chen, Q Q Jin, Z Z Peng, X L Ma

Affiliations

  1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, 110016 Shenyang, China.

PMID: 27435638 PMCID: PMC4951811 DOI: 10.1038/srep30096

Abstract

The high hardness or yield strength of an alloy is known to benefit from the presence of small-scale precipitation, whose hardening effect is extensively applied in various engineering materials. Stability of the precipitates is of critical importance in maintaining the high performance of a material under mechanical loading. The long period stacking ordered (LPSO) structures play an important role in tuning the mechanical properties of an Mg-alloy. Here, we report deformation twinning induces decomposition of lamellar LPSO structures and their re-precipitation in an Mg-Zn-Y alloy. Using atomic resolution scanning transmission electron microscopy (STEM), we directly illustrate that the misfit dislocations at the interface between the lamellar LPSO structure and the deformation twin is corresponding to the decomposition and re-precipitation of LPSO structure, owing to dislocation effects on redistribution of Zn/Y atoms. This finding demonstrates that deformation twinning could destabilize complex precipitates. An occurrence of decomposition and re-precipitation, leading to a variant spatial distribution of the precipitates under plastic loading, may significantly affect the precipitation strengthening.

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