Formation of core–shell network structural titanium–nitrogen alloys with different nitrogen contents

Zhang, Y. S.; Zhang, W.; Wang, X.; Huo, Wangtu

doi:10.1007/s10853-017-1015-8

Cited by 7 publications

(1 citation statement)

References 18 publications

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“…SPS of oxidized or nitrided spherical Ti powders can produce a networklike core-shell structure. [108][109][110][111][112][113]116] Figure 8a shows one such example from a Ti-O alloy. [109] The shell contains more interstitial elements than the core.…”

Section: Novel Timmcs Reinforced With O N and Hmentioning

confidence: 99%

Recent Advances in the Design and Fabrication of Strong and Ductile (Tensile) Titanium Metal Matrix Composites

et al. 2019

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Titanium metal matrix composites (TiMMCs) offer much improved strength, elastic modulus, and wear resistance at both room and elevated temperatures but often at the expense of tensile ductility, which excludes them from most key engineering applications. Recent advances show that this long-standing strength-ductility dilemma can be controlled to a large extent by adopting novel design concepts based on powder metallurgy (PM). These include: 1) reinforcing the Ti matrix with a three-dimensional (3D) network-like architecture of TiB whiskers or nanowires; 2) the use of nanostructured carbon precursors (nanotubes, fibers, and graphene) to enable in situ formation of TiC reinforcements; and 3) the exploitation of "ductility-detrimental" interstitial elements (O, N, H) for strengthening. On a laboratory scale, the fabricated TiMMCs all exhibit an excellent combination of tensile strength and elongation, comparable to, or even better than, solution-treated and aged (STA) wrought Ti-6Al-4V. The mechanisms behind these novel developments are analyzed. New insights into the design and fabrication of stronger and more ductile (tensile) TiMMCs are offered.

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