| Al,Nb含量对GH706合金长期时效组织及持久性能的影响 |
| |
| 引用本文： | 信昕,孙文儒,程丽萍,郭守仁,杨洪才,胡壮麒. Al,Nb含量对GH706合金长期时效组织及持久性能的影响[J]. 沈阳黄金学院学报, 2010, 0(1): 62-67 |
| |
| 作者姓名： | 信昕 孙文儒 程丽萍 郭守仁 杨洪才 胡壮麒 |
| |
| 作者单位： | [1]东北大学材料与冶金学院,沈阳110004 [2]中国科学院金属研究所,沈阳110016 [3]鞍山钢铁集团工程技术有限公司,辽宁鞍山114021 |
| |
| 摘 要： | 铝和铌含量的改变对GH706合金组织及持久性能影响的研究结果表明,将Al的质量分数升高至1.25%,而Nb的质量分数降低至2.0%,抑制了合金晶内强化相γ″-Ni3Nb相的析出,促进了γ′-Ni3Al相的析出,同时阻止了晶界η-Ni3（Ti,Nb）相形成.在650℃长期时效后,降Nb提Al后晶内γ″-Ni3Nb相长大及η相的析出受到抑制,合金组织具有更高的稳定性,合金持久寿命的降低幅度远低于原型合金.
|
| 关 键 词： | GH706合金 长期时效 析出相 持久性能 |
Effects of Al and Nb on microstructures and stress rupture property of long-time aging GH706 alloy |
| |
| XIN Xin,SUN Wen-ru,CHENG Li-ping,GUO Shou-ren,YANG Hong-cai,HU Zhuang-qi. Effects of Al and Nb on microstructures and stress rupture property of long-time aging GH706 alloy[J]. , 2010, 0(1): 62-67 |
| |
| Authors: | XIN Xin SUN Wen-ru CHENG Li-ping GUO Shou-ren YANG Hong-cai HU Zhuang-qi |
| |
| Affiliation: | 1.School of Materials and Metallurgy,Northeastern University,Shenyang 110004,China;2.Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;3.Ansteel Engineering and Technology Co.,Ltd,Anshan 114021,China) |
| |
| Abstract: | Effects of Al and Nb on microstructures and stress rupture property of GH706 alloy has been investigated in the present work.By increasing Al to 1.25% and lowering Nb to 2.0%,the precipitation of transgranular γ″-Ni3Nb phase and intergranular η-Ni3（Ti,Nb） phase are constrained,while the formation of γ′-Ni3Al phase is promoted.After long-time aging treatment,the growth of γ″ phase and the formation of η phase are still hindered in the modified alloy.As a result,the modified alloy possesses a better microstructure stability,and the reduced amplitude in stress rupture life of the alloy is lower than that of a standard alloy. |
| |
| Keywords: | GH706 alloy long-time aging treatment precipitated phase stress rupture property |
| 本文献已被 维普 等数据库收录！ |
|
