In situ micropillar compression reveals superior strength and ductility but an absence of damage in lamellar bone

ABSTRACTCu-Nb composite wires were produced from powder, electrolytically coated with tin and annealed to convert the Nb fibres to Nb 3Sn. The content was varied between 10 wt % and 40 wt %. The superconducting properties of the wires were determined. The mechanical properties, tensile strength, yield strength and ductility were measured as a function of volume fraction and deformation over a wide temperature range. The results are compared with those for wires produced by different techniques.

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Effects of nanosized TiCp dispersion on the high-temperature tensile strength and ductility of in situ TiCp/Al-Cu-Mg-Si nanocomposites

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2018.10.052 ◽

2019 ◽

Vol 774 ◽

pp. 425-433 ◽

Cited By ~ 9

Author(s):

Yu-Yang Gao ◽

Feng Qiu ◽

Run Geng ◽

Jian-Ge Chu ◽

Qing-Long Zhao ◽

...

Keyword(s):

Tensile Strength ◽

High Temperature ◽

High Temperature Tensile ◽

Strength And Ductility

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Effects of Si content on the microstructure and tensile strength of an in situAl/Mg2Si composite

Journal of Materials Research ◽

10.1557/jmr.1999.0012 ◽

1999 ◽

Vol 14 (1) ◽

pp. 68-74 ◽

Cited By ~ 58

Author(s):

Jian Zhang ◽

Yu-qing Wang ◽

Bing Yang ◽

Ben-lian Zhou

Keyword(s):

Tensile Strength ◽

Metal Matrix ◽

Die Casting ◽

Solidification Process ◽

Matrix Composites ◽

Fracture Characteristics ◽

Casting Technique ◽

Si Content ◽

Strength And Ductility

Al/Mg2Si composites were in situ fabricated by the usual die-casting technique, and effects of the Si contents in the composites on microstructures and tensile strengths were investigated. Experimental results show that extra Si contents in Al/Mg2Si composites induce a ductile matrix and a uniform distribution of in situ particles. The refined microstructures lead to an obvious increase in both strength and ductility of the metal matrix composites (MMCs). The effects of extra Si on both the solidification process and fracture characteristics of the Al/Mg2Si composites were analyzed.

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Microstructure and Mechanical Properties of High Vacuum Die-Cast AlSiMgMn Alloys at as-Cast and T6-Treated Conditions

Materials ◽

10.3390/ma12132065 ◽

2019 ◽

Vol 12 (13) ◽

pp. 2065

Author(s):

Fei Liu ◽

Haidong Zhao ◽

Runsheng Yang ◽

Fengzhen Sun

Keyword(s):

Mechanical Properties ◽

Heat Treatment ◽

Failure Modes ◽

High Vacuum ◽

High Strength ◽

Thin Wall ◽

T6 Heat Treatment ◽

Die Cast ◽

Strength And Ductility

Al–Si–Mg based alloys can provide high strength and ductility to satisfy the increasing demands of thin wall castings for automotive applications. This study has investigated the effects of T6 heat-treatment on the microstructures, the local mechanical properties of alloy phases and the fracture behavior of high vacuum die-cast AlSiMgMn alloys using in-situ scanning electron microscopy (SEM) in combination with nano-indentation testing. The microstructures of the alloys at as-cast and T6 treated conditions were compared and analyzed. It is found that the T6 heat treatment plays different roles in affecting the hardness and the Young’s modulus of alloy phases. This study also found that the T6 heat treatment would influence the failure modes of the alloys. The mechanisms of crack propagation in the as-cast and T6 treated alloys were also analyzed and discussed.

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