B在K417G合金中的作用研究
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- 英文论文题名：Study on the Effect of B Element in K417G Alloy
- 论文作者：刘芳 ; 于连旭 ; 信昕 ; 孙文儒 ; 郭守仁 ; 胡壮麒
- 英文论文作者：Liu Fang ; Yu Lianxu ; Xin Xin ; Sun Wenru ; Guo Shouren ; Hu Zhuangqi ; Institute of Metal Research ; Chinese Academy of Science
- 年：2015
- 作者机构：中国科学院金属研究所高温合金部;
- 论文关键词：K417G合金 ; B ; 硼化物 ; 持久性能
- 英文论文关键词：K417G alloy ; B ; boride ; stress rupture properties
- 会议召开时间：2015-05-20
- 会议录名称：第十三届中国高温合金年会论文集
- 英文会议录名称：Proceedings of the 13th China Superalloys Conference
- 语种：中文
- 分类号：TG146.15
- 学会代码：ZGJS
- 会议名称：第十三届中国高温合金年会
- 会议地点：中国北京
- 主办单位：中国金属学会高温材料分会
- 学会名称：中国金属学会
- 页数：4
- 文件大小：1780k
- 原文格式：O
- 会议级别：全国
摘要
研究了B在0.0017%~0.035%含量范围内的K417G合金组织性能的变化,结果表明:当B含量低于0.012%时,B原子主要固溶在合金基体及碳化物中;当B含量增加到0.016%,析出少量硼化物,随B含量增加,硼化物析出增多,呈块状分布在晶界或共晶处。B对碳化物析出无明显影响,但明显促进γ+γ′共晶析出,并增大合金中疏松形成趋势。随B含量增加,持久性能明显提高。
The effect of B(0.0017%~0.035%) on the microstructure and properties of K417 G alloy was investigated.It is shown that when B was less than 0.012%,B atoms were mainly dissolved in the matrix and carbide.Increasing B to0.016%,only a few blocky borides were formed,which were further increased as boron increasing,which distributed at the grain boundaries or the eutectic area.The precipitation of carbide was seldom changed as boron content in alloy was increased.The addition of boron resulted in an increase in the amount of γ+γ' eutectic as well as the tendency to form microporosity.With the increase of B content,stress rupture properties were improved significantly.
The effect of B(0.0017%~0.035%) on the microstructure and properties of K417 G alloy was investigated.It is shown that when B was less than 0.012%,B atoms were mainly dissolved in the matrix and carbide.Increasing B to0.016%,only a few blocky borides were formed,which were further increased as boron increasing,which distributed at the grain boundaries or the eutectic area.The precipitation of carbide was seldom changed as boron content in alloy was increased.The addition of boron resulted in an increase in the amount of γ+γ' eutectic as well as the tendency to form microporosity.With the increase of B content,stress rupture properties were improved significantly.
引文
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[4]Yan B C,Zhang J,et al.Effect of boron additions on the microstructure and transverse properties of a directionally solidified superalloy[J].Mater.Sci.Eng.A,2008:474,39~47.
[5]Antony K C,Radavich J F.Solute Effects of Boron And Zirconium On Microporosity[C].TMS,1976:137~146.
[2]Cadel E,Lemarchand D,et al.Atom probe tomography investigation of the microstructure of superalloys N18[J].Acta Mater.2002:50,957~966.
[3]Xiao L,Chen D L,et al.Effect of Boron Con-centration on Fatigue Crack Propagation Resistance And Low Cycle Fatigue Properties Of Inconel 718 Superalloys[C].TMS,2004:275~281.
[4]Yan B C,Zhang J,et al.Effect of boron additions on the microstructure and transverse properties of a directionally solidified superalloy[J].Mater.Sci.Eng.A,2008:474,39~47.
[5]Antony K C,Radavich J F.Solute Effects of Boron And Zirconium On Microporosity[C].TMS,1976:137~146.