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

吴艳阳; 程世长; 刘正东; 李谦

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

更新时间：2026-01-21

- Effect of Solid Solution Temperature on Structure and Properties of Modified Inconel 718 Alloy
- Special Steel Vol. 28, Issue 3, Pages: 19-21(2007)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：13 November 2006，
  
  Online First：31 January 2023，
  
  Published：31 January 2007
- 稿件说明：
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吴艳阳, 程世长, 刘正东, et al. Effect of Solid Solution Temperature on Structure and Properties of Modified Inconel 718 Alloy[J]. Special Steel, 2007, 28(3): 19-21.
DOI：

吴艳阳, 程世长, 刘正东, et al. Effect of Solid Solution Temperature on Structure and Properties of Modified Inconel 718 Alloy[J]. Special Steel, 2007, 28(3): 19-21. DOI：

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。

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.

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