镍包覆处理对氧化物弥散强化镍基高温合金组织与性能的影响
Effect of Nickel Plating Process on Microstructure and Property of Oxide Dispersion Strengthened Nikel-Based High Temperature Alloy
摘 要
通过表面改性及化学镀镍技术制备出镍包覆Y2O3粉, 并以不同质量分数(0%~10%)添加到镍基高温合金粉中, 采用机械合金化和真空烧结工艺制备出氮化物弥散强化(ODS)镍基高温合金, 研究了镍包覆及纳米Y2O3添加量对合金组织、相对密度和抗拉强度的影响。结果表明: 镍包覆处理降低了片状、网状黑色相Y2O3的偏聚, 使纳米Y2O3粉的最佳添加量(质量分数)、相对密度、抗拉强度由包覆前的1.5%, 95.32%, 639 MPa增加到了5%, 97.45%, 725 MPa。
镍包覆
抗拉强度
相对密度
oxide dispersion strengthened (ODS) nickel-based high temperature alloy
nickel plating
tensile strength
relative density
Abstract
Nickel plated Y2O3 powders were prepared by surface modifying and chemical nickel-plating technology, and was added into nickel-based high temperature alloy powders to prepare oxide dispersion strengthened (ODS) nickel-based high temperature alloy by mechanical alloying and vacuum sintering process, and the effects nickel plating and Y2O3 phase content on microstructure, relative density and tensile strength of the alloy were studied. The results show that nickel plating process improved the segregation of black Y2O3 phase with flake and net-work, and increased the optimal adding amount of Y2O3 powders, relative density and tensile strength from 1.5wt%, 95.32%, 639 MPa, before nickel plating, to 5wt%, 97.45%, 725 MPa.
中图分类号 TF125.5
所属栏目 试验研究
基金项目 国家自然科学基金重点资助项目(50634060)
收稿日期 2011/9/16
修改稿日期 2012/6/16
网络出版日期
作者单位点击查看
备注李小峰(1987-), 男, 江西南昌人, 硕士研究生。
引用该论文: LI Xiao-feng,XIONG Wei-hao,LI Jun,KONG Tao. Effect of Nickel Plating Process on Microstructure and Property of Oxide Dispersion Strengthened Nikel-Based High Temperature Alloy[J]. Materials for mechancial engineering, 2012, 36(9): 34～37
李小峰,熊惟皓,李俊,孔涛. 镍包覆处理对氧化物弥散强化镍基高温合金组织与性能的影响[J]. 机械工程材料, 2012, 36(9): 34～37
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参考文献
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