English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The NiAl-based composite strengthened by TiC and Al2O3 was synthesized by thermal explosion and hot extrusion. Its microstructure and mechanical properties were investigated by XRD, OM, TEM and HRTEM. The results reveal that the NiAl-TiC- Al2O3 composite can be densified with less porosity. The NiAl grain of the composite matrix has been well refined by the TiC and Al2O3 particles. In addition, stacking fault and microtwins formed in some TiC particles and thin amorphous layer also observed along NiAl/TiC interface. Moreover Ti2AlC particle with intergrowth TiC plate inside is formed along the NiAl grain boundary. Elemental powder mixtures including Ni(98%, <1µm), Al(98%, <13µm), Ti(99%, <75µm), TiO2(98%,<10µm) and C(99.9%, <1µm) for composites of NiAl-15vol TiC+2vol Al2O3 were dry mixed in a ball milling for 15 h. The mixed powders were put into the thermal explosion and hot extrusion system (16). Firstly, the mixed powders were pressed into compact and degassed; then the inductor heat reaction puncheon to 800 K to start the reaction synthesis. The temperature of the compact was detected by a thermal pair in the thermal explosion and hot extrusion synthesis system. When the reaction synthesis began, the temperature of the powder would increases dramatically. Then two second later, a force of 500 MPa was imposed on the reaction puncheon in order to densify the synthesized composite.

TEM investigation on ceramic strengthening NiAl-based composite prepared by thermal explosion and hot extrusion