一种低密度定向凝固高温合金DZ424
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- 英文论文题名：A Directional Solidified Nickel-base Superalloy DZ424 with Low Density
- 论文作者：宋友辉 ; 吴剑涛 ; 吴保平 ; 李俊涛 ; 董建新 ; 王祯 ; 刘浩然 ; 李培佳
- 英文论文作者：Song Youhui ; Wu Jiantao ; Wu Baoping ; Li Juntao ; Dong Jianxin ; Wang Zhen ; Liu Haoran ; Li Peijia ; Beijing Power Machinery Research Inst. ; High Temperature Materials Research Division ; Central Iron & Steel Material Research Institute ; University of Science and Technology Beijing
- 年：2015
- 作者机构：北京动力机械研究所;钢铁研究总院高温材料研究所;北京科技大学材料科学与工程学院;
- 论文关键词：定向凝固 ; 高温合金 ; DZ424
- 英文论文关键词：directional solidification ; superalloy ; DZ424
- 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：TG132.3
- 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：1418k
- 原文格式：O
- 会议级别：全国
摘要
K424合金是一种高Al、Ti、低密度的高性能等轴晶高温合金。为进一步提高该合金的热强性能,满足发动机损伤容限设计需求,通过优化B、Zr及TCP相形成元素范围,优选热处理制度,发展出定向凝固合金DZ424。DZ424合金不含贵金属元素,具有低密度,低成本、高比强的特点。DZ424合金具有较高的高温强度和持久性能,与K424合金相比,使用温度可提高约30℃。
K424 superalloy is one of most excellent conventional cast superalloys,which have been widely used due to its low density and high strength.To further improve the high temperature strength and meet engine damage tolerance design requirements,a new directionally solidified Ni-base superalloy DZ424 had been successfully developed by optimizing boron,zirconium and TCP phase forming elements,and heat treatment.DZ424 alloy without rare and expensive elemental additions is characteristics of low density and cost,high creep rupture life and high temperature strength,which is at least a 30℃ increase in temperature capability over the K424 alloy.
K424 superalloy is one of most excellent conventional cast superalloys,which have been widely used due to its low density and high strength.To further improve the high temperature strength and meet engine damage tolerance design requirements,a new directionally solidified Ni-base superalloy DZ424 had been successfully developed by optimizing boron,zirconium and TCP phase forming elements,and heat treatment.DZ424 alloy without rare and expensive elemental additions is characteristics of low density and cost,high creep rupture life and high temperature strength,which is at least a 30℃ increase in temperature capability over the K424 alloy.
引文
[1]吴剑涛,冯涤,等.热控凝固铸造K424合金特性研究[A].中国金属学会高温材料分会.动力与能源用高温结构材料一第十一届中国高温合金年会论文集[C].中国金属学会高温材料分会,2007,4:322~325.
[2]李俊涛,邵冲,等.铸造工艺对K424合金涡轮组织和性能的影响[J].材料工程,2006,S1:297~299,303.
[3]甄宝林,张绍津.镍基铸造K24合金中的σ相的研究[J].钢铁研究学报,1985,5(3):267~275.
[4]中国航空材料手册,中国标准出版社,2002.
[2]李俊涛,邵冲,等.铸造工艺对K424合金涡轮组织和性能的影响[J].材料工程,2006,S1:297~299,303.
[3]甄宝林,张绍津.镍基铸造K24合金中的σ相的研究[J].钢铁研究学报,1985,5(3):267~275.
[4]中国航空材料手册,中国标准出版社,2002.