Effect of γ  irradiation on creep property of Ni  base alloy GH33A

Peng Yuqing

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Effect of γ irradiation on creep property of Ni base alloy GH33A

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- Effect of γ irradiation on creep property of Ni base alloy GH33A
- NUCLEAR TECHNIQUES Issue 9, (1997)
- 作者机构：
  
  1. 中国科学院上海原子核研究所
  2. 上海第五钢铁厂
  3. 上海师范大学
  4. 中国科学院上海原子核研究所上海第五钢铁厂上海师范大学
- 作者简介：
- 基金信息：
- DOI：
  CLC： TL345
- Published：01 September 1997
- 稿件说明：
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[1]彭郁卿,朱金元,卜为.γ-辐照对 GH33A 镍基高温合金蠕变性能的影响[J].核技术,1997(09):12-15.

Peng Yuqing. Effect of γ irradiation on creep property of Ni base alloy GH33A[J]. Nuclear techniques, 1997, (9).
[1]彭郁卿,朱金元,卜为.γ-辐照对 GH33A 镍基高温合金蠕变性能的影响[J].核技术,1997(09):12-15. DOI：

Peng Yuqing. Effect of γ irradiation on creep property of Ni base alloy GH33A[J]. Nuclear techniques, 1997, (9). DOI：

摘要

测量了γ－辐照对ＧＨ３３Ａ镍基高温合金蠕变性能影响的蠕变曲线、正电子寿命谱和Ｄｏｐｐｌｅｒ展宽谱。结果表明：无镁样品辐照后，塑性提高３８．１％，断裂寿命不变，而含镁（０．００４５％）样品辐照后，断裂寿命和塑性均下降；辐照的无镁样品经负蠕变后加载，断裂寿命增加９．４％，塑性下降２５．６％；辐照的长期时效含镁（０．００５４％）样品经负蠕变后再加载，断裂寿命显著增加（４８．３％），同时塑性保持不变。

Abstract

The effect of γ irradiation on the creep properties of GH33A

a high temperature Ni base alloy

is investigated Creep curves

positron lifetimes and Doppler broadening spectra are measured The results show that plasticity of the non magnesium sample is greatly increased （38 1%） after irradiation

while the breaking lifetime keeps constant However

both lifetime and plasticity for the Mg containing （0 0045wt%） sample are reduced After negative creep load

lifetime of the irradiated non Mg sample increased （9 4%）

but plasticity decreased（25 6%） After irradiation and negative creep load

lifetime of the long aged alloy with Mg content of 0 0054% is increased significantly （48 3%）

while plasticity remain unchanged

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