Effects of Filtration Purification on Mechanical Properties of Superalloy K4169 Secondary Revert

Dai Binyu; Wang Weiwei; Li Bo

doi:10.15980/j.tzzz.2016.12.016

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Effects of Filtration Purification on Mechanical Properties of Superalloy K4169 Secondary Revert
Vol. 36, Issue 12, Pages: 1298-1301(2016)
Published： 2016 ，
DOI： 10.15980/j.tzzz.2016.12.016

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[1]戴斌煜,王薇薇,李波.过滤净化对K4169合金二次返回料力学性能的影响[J].特种铸造及有色合金,2016,36(12):1298-1301.

Dai Binyu, Wang Weiwei, Li Bo. Effects of Filtration Purification on Mechanical Properties of Superalloy K4169 Secondary Revert. [J]. Special Casting & Nonferrous Alloys 36(12):1298-1301(2016)
[1]戴斌煜,王薇薇,李波.过滤净化对K4169合金二次返回料力学性能的影响[J].特种铸造及有色合金,2016,36(12):1298-1301. DOI： 10.15980/j.tzzz.2016.12.016.

Dai Binyu, Wang Weiwei, Li Bo. Effects of Filtration Purification on Mechanical Properties of Superalloy K4169 Secondary Revert. [J]. Special Casting & Nonferrous Alloys 36(12):1298-1301(2016) DOI： 10.15980/j.tzzz.2016.12.016.

摘要

采用泡沫陶瓷过滤器对K4169镍基高温合金二次返回料进行净化处理

测试了合金的室温力学性能和中温持久寿命。结果表明

采用多块过滤器组合净化K4169合金二次返回料

显著提高了合金的力学性能

尤其是中温持久寿命

在650℃/620 MPa下的持久寿命从0.17h提高到20.5h以上。结果表明

过滤净化可有效滤除合金中10μm以上的夹杂物

显著减少显微缩松缺陷。

Abstract

Effects of filtration purification on mechanical properties and stress rupture properties of Nibase superalloy K4169 secondary revert were investigated by using multilayer ceramic foam filter.The results show that the filtration treatment can improve the strength and elongation of superalloy K4169 secondary revert

especially rupture life through ceramic foam filter with multilayer smaller pore diameter.The rupture life of the purified alloy is increased from 0.17 hto more than 20.5hat 650 ℃/620 MPa.The structure of the alloy was investigated by SEM and OM.The results indicate that the inclusion with more than 10μm in size can be removed effectively from the alloy by the infiltration

and microporosity is decreased significantly.