Effect of Re-Working on Secondary Phases in Modified N18 Sheet

Chen Boquan; Qiu Shaoyu; Peng Qian; Dai Xun; Wang Pengfei; Liu Hong; Wei Tianguo

doi:10.13832/j.jnpe.2018.02.0032

Volume 39 Issue 2

Feb. 2025

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Chen Boquan, Qiu Shaoyu, Peng Qian, Dai Xun, Wang Pengfei, Liu Hong, Wei Tianguo. Effect of Re-Working on Secondary Phases in Modified N18 Sheet[J]. Nuclear Power Engineering, 2018, 39(2): 32-36. doi: 10.13832/j.jnpe.2018.02.0032

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Chen Boquan, Qiu Shaoyu, Peng Qian, Dai Xun, Wang Pengfei, Liu Hong, Wei Tianguo. Effect of Re-Working on Secondary Phases in Modified N18 Sheet[J]. Nuclear Power Engineering, 2018, 39(2): 32-36. doi: 10.13832/j.jnpe.2018.02.0032

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Effect of Re-Working on Secondary Phases in Modified N18 Sheet

doi: 10.13832/j.jnpe.2018.02.0032

Nuclear Fuel and Material Research Sub-Institute, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2017-11-29
Rev Recd Date: 2018-03-19

Available Online: 2025-02-09

Abstract

Abstract

A combination of various research methods including DSC,SEM and TEM was applied to systematically investigate the effect of re-working on the secondary phases.The results showed that the hot-rolling was conducted in the dual-phase region.In the process of cold-working and followed annealing,β-Zr which formed in the hot-rolling decomposed,leading to the precipitation of fine particles,which resulted in the clusters of tiny compounds.The secondary phases are Zr（Fe,Cr,Nb）₂ with a crystal structure of hexagonal close-packed（HCP）.The atomic percentage ratio of alloying elements,n（Fe）/[n（Cr）+n(Nb],for particles in original sheets is close to 5/3,while it was experiencing a downward trend after the re-working.The particles in the cluster own a higher Nb content with the n（Fe）/[n（Cr）+ n（Nb）] approximate to 1.
- Zirconium alloy,
- Secondary phase,
- Zr-Fe-Nb,
- Re-working,
- N18