High Temperature Creep Behavior of NbCr<sub>2</sub>/Cr Alloy

Deng Liping; Lu Shiqiang; Tang Binbing; Lei Zhili

doi:10.15980/j.tzzz.2018.10.005

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High Temperature Creep Behavior of NbCr₂/Cr Alloy
Vol. 38, Issue 10, Pages: 1061-1064(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.10.005

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[1]邓莉萍,鲁世强,汤斌兵,雷志立.NbCr_2/Cr合金的高温蠕变行为[J].特种铸造及有色合金,2018,38(10):1061-1064.

Deng Liping, Lu Shiqiang, Tang Binbing, et al. High Temperature Creep Behavior of NbCr₂/Cr Alloy. [J]. Special Casting & Nonferrous Alloys 38(10):1061-1064(2018)
[1]邓莉萍,鲁世强,汤斌兵,雷志立.NbCr_2/Cr合金的高温蠕变行为[J].特种铸造及有色合金,2018,38(10):1061-1064. DOI： 10.15980/j.tzzz.2018.10.005.

Deng Liping, Lu Shiqiang, Tang Binbing, et al. High Temperature Creep Behavior of NbCr₂/Cr Alloy. [J]. Special Casting & Nonferrous Alloys 38(10):1061-1064(2018) DOI： 10.15980/j.tzzz.2018.10.005.

摘要

通过恒应力压缩试验

研究了成分为Cr-12Nb的细晶NbCr

/Cr合金的高温蠕变行为。结果表明

NbCr

/Cr合金的稳态蠕变速率随应力的增加和变形温度的升高而加快;Cr基体中位错的滑移和Laves相NbCr

中的孪生是蠕变变形的基本方式;Cr基体的动态再结晶和NbCr

相的同步剪切是合金蠕变抗力降低的主要原因。

Abstract

The high temperature creep behavior of the fine-crystal NbCr

/Cr alloy with composition Cr-12 Nb（in atomic）was carried out by compression tests at constant stress.The results show that the minimum creep rate is increased with increasing in stress and deformation temperature.Slipping in the Cr matrix and twinning in the Laves phase NbCr

are the main modes of creep deformation for the alloy.The decrease of the creep resistance is attributed to dynamic recrystallization of Cr matrix and synchroshearing of NbCr

particles.