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

In this study, different amounts of TaC powders (0, 10, 15 and 20mass%) were mixed and added to the cobalt-based alloy powders. The composite powders were sintered at 1260, 1270, 1280 and 1290°C, respectively, for 1 h. The experimental results showed that adding 10mass% TaC and sintering at 1270°C for 1 h was the optimal process, resulting a high TRS value of 1160MPa and uniform carbides precipitations. From the microstructural observations, it was cleared that M6C carbides precipitated in the matrix of the Co-based alloys (0% TaC) after vacuum sintering. However, the more uniform precipitations ofM6C,M23C6 andMC (M = Ta) carbides precipitated in the matrix and grain boundaries of the Co-based alloys after vacuum sintering. Furthermore, in the HIP treatment (1250°C/125MPa/100min) of 0% and 10% TaC sintered composite materials, it was proved that the closed pores were effectively eliminated and mechanical properties significantly improved. The highest hardness (HRA 79.3) and TRS (1720MPa) were obtained by adding 10% TaC powders, which were sintered at 1270°C for 1 h, followed by HIP treatment. [doi:10.2320/matertrans.M2014044]

materials transactions

Microstructure and Mechanical Properties of Cobalt-Based Alloys Strengthened with Tantalum Carbide Powder &lt;i&gt;via&lt;/i&gt; Vacuum Sintering and HIP Treatments