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

Phosphorous is generally regarded as detrimental in Ni-base alloys; consequently most specifications restrict P to low levels (< 0.015%). The effect of P on the tensile, rupture, and hot workability of alloy 718 was investigated on product produced from VIM + VAR heats. Increasing P content from the 0.004%-0.009% range, typical of most commercial product, to 0.022% increased rupture life by 2 to 2.5 times at 649 o C. Other properties were not appreciably changed. Decreases in P content to levels as low as 0.0007% resulted in a severe loss of rupture life giving a total spread of more than one order of magnitude. Microstructural, Auger Electron Spectroscopic and SEM fractographic analyses were performed to explore the possible mechanism of the observed P effect. It is suggested that grain boundary segregation of P and P-dislocation interaction were responsible for the improvement in stress rupture properties. These effects were most pronounced in fine grained product and may, therefore, be helpful in resolving rupture/creep limitations in ultra-fine grained 718. Superalloys 718,625,706 and Various Derivatives Edited by EA. Loria The Minerals, Metals & Materials Society, 1994

The Effect of Phosphorous on Mechanical Properties of Alloy 718