@inproceedings{a8bdcfac66c24fbfb647bd7fd35c8ef0,
title = "Effects of refiners on grain structures of superalloy in 718 at high pouring temperature",
abstract = "In order to improve the filling ability of large complex thin wall castings, the pouring temperature should be increased, but this will result in grain size coarsening. Therefore, effects of refiners on grain structures of superalloy Inconel 718 have been investigated. It is shown that, adding mixed refiner consisting of two ternary intermetallic compounds at pouring temperature of 1520°C, the average equiaxed grain size could be refined from 10.56 to 2.71mm and the proportion of equiaxed grains at cross-section could be improved from 10 to 84\%. At the same pouring temperature, the amount of porosity in specimens could be greatly decreased by adding refiners into the melt. Moreover, experimental results indicate that trace addition of refiners to the melt neither introduces inclusions nor changes the phase constituents of the alloy. Grain refinement mechanisms are also discussed.",
keywords = "Grain refinement, Grain size, Inconel 718, Porosity, Superalloy",
author = "Ziqi Jie and Jun Zhang and Taiwen Huang and Zhilong Zhao and Lin Liu and Hengzhi Fu",
year = "2014",
doi = "10.1002/9781119016854.ch16",
language = "英语",
series = "8th International Symposium on Superalloy 718 and Derivatives 2014",
publisher = "John Wiley and Sons Inc.",
pages = "193--202",
editor = "Eric Ott and Anthony Banik and Joel Andersson and Ian Dempster and Tim Gabb and Jon Groh and Karl Heck and Randy Helmink and Xingbo Liu and Agnieszka Wusatowska-Sarnek",
booktitle = "8th International Symposium on Superalloy 718 and Derivatives 2014",
note = "8th International Symposium on Superalloy 718 and Derivatives 2014 ; Conference date: 28-09-2014 Through 01-10-2014",
}