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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Casting is suggested to be a promising method to produce the low-cost ODS steel with large volume and high throughput. However, the ingot homogeneity of the cast ODS steel was rarely reported. Recently, our group prepared a castable ODS steel, which exhibited long creep life of 3800 h under 650 °C and 120 MPa. Thus the purpose of this work is presenting the homogeneity of the castable ODS steel. Theoretical addition of Y was 0.1 wt% thereby the steel was named as 9Cr-10Y. Nine samples were machined from the top, middle, bottom, left, center, right regions of this plate then subjected to homogeneity analysis. Y content, prior austenite grain size and second phase size of the nine specimens were 0.023–0.034 wt%, 9.27–0.94  μ m and 294–314 nm, respectively. Low coefficient of variation (C v ) of 14.5% for Y content, 2.3% for prior austenite grain size and second phase size indicated that the homogeneous composition and microstructure were achieved in the 9Cr-10Y plate. Besides, hardness fluctuated within a small range and all the C v  values were in the range of 0.8%–4.3%, which demonstrated that the hardness distribution along RD, TD, and ND was homogeneous. Furthermore, the 9Cr-10Y plate exhibited high strength of 765 MPa and high elongation of 18.9% as well as low DBTT of −40 °C.

Composition, microstructure and mechanical homogeneity evaluation of the Y-bearing 9Cr F/M steel fabricated by VIM & casting technique