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

Synopsis : The purpose of this paper is to develop a non-destructive method for evaluating cooling-rates (time for cooling from austenitizing temperature to 500•Ž (Ht)) from 0.4C-5Cr-Mo-V hot-work tool steel specimens after tempering procedure. For this, the authors tried to employ Barkhausen noise (BHN) signals which were induced during magnetization process. The BHN signals were measured on surfaces of specimens which were cooled with various Ht and were tempered to adjust hardness (H). The experimental results indicated that two BHN parameters, the total energy ( Vp) and the maximum output (Vh) of BHN signals were strongly related with microstructure which changed depending on Ht. These relationships could be successfully summarized as experimental expressions, Ht= f (H, Vp) and Hi = f (H, Vh). These results made it clear that non-destructive evaluation of Ht could be achieved by using a hybrid method combining the BHN method with an ordinary hardness test. Then in this paper, the authors confirmed the possibility of estimation of charpy impact values (Ch) through the relationship between Ht,H and Ch.

Non-destructive Cooling Rate Evaluation of 0.4C-5Cr-Mo-V Hot-work Tool Steel by Barkhausen Noise Analysis