ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2007, Vol. 28 ›› Issue (3): 19-21.

• 试验研究 • 上一篇    下一篇

固溶温度对改型Inconel 718合金组织和性能的影响

吴艳阳1,2,程世长2,刘正东2,李谦1   

  1. 1 河南科技大学材料科学与工程学院,洛阳471003;
    2钢铁研究总院,北京100081
  • 收稿日期:2006-11-13 出版日期:2007-05-01 发布日期:2023-01-31
  • 作者简介:吴艳阳(1982-),男,硕士,2004年河南科技大学毕业,从事高温金属材料研究。

Effect of Solid Solution Temperature on Structure and Properties of Modified Inconel 718 Alloy

Wu  Yanyang1,2,Cheng  Shichang2,Liu  Zhengdong2, Li  Qian1   

  1. 1 School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471003;
    2 Central Iron and Steel Research Institute,Beijing 100081
  • Received:2006-11-13 Published:2007-05-01 Online:2023-01-31

摘要: 用X-射线衍射法(XRD)和扫描电镜(SEM)研究了960~1020℃固溶+720℃8 h炉冷至620℃8 h空冷(二次时效)处理的改型718合金的力学性能和组织。结果表明,随固溶温度的提高。合金室温和350℃强度降低,塑性和韧性显著提高。随固溶温度升高,合金中强化相η数量减少,1000℃时完全消失;强化相γ′+γ″随固溶温度升高而增加,达到1000℃时最多。固溶+二次时效后,大部分γ′尺寸为10~18 nm。

关键词: 改型Inconel 718合金, 固溶温度, 组织, 性能

Abstract: The structure and mechanical properties of 960~1020 ℃ solid solution treated + 720 ℃ 8 h furnace cooling to 620 ℃8 h air cooling double aging modified 718 alloy have been studied by X- ray diffraction(XRD)and scanning electron microscope(SEM).Results showed that with increasing solid solution temperature the ambient and 350 ℃ strength of alloy decreased,while plasticity and toughness increased; with increasing solid solution temperature, the amount of strengthening phase η in alloy decreased and disappeared at 1000 ℃,and the amount of strengthening phases γ'+γ" increased until 1000 ℃ then decreased. After solid solution + double aging,the size of most of γ' was 10~18 nm.

Key words: Modified Inconel 718 Alloy,Solid Solution Temperature,Structure,Properties