氢离子辐照对热老化 Z3CN20.09M 双相不锈钢机械性能的影响

IF 3.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2024-10-20 DOI:10.1016/j.vacuum.2024.113757

Penghui Lei , Ni Jiang , Jiannan Hao , Qing Peng , Pan Qi , Fangjie Shi , Yuhua Hang , Qianwu Li , Chao Ye

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引用次数: 0

摘要

为了研究热时效和氢的协同效应，Z3CN20.09M 双相不锈钢（DSS）在 400 °C 下进行热时效，然后用氢离子进行辐照。由于旋光分解引起的铁和铬元素偏析，铁素体相的纳米硬度在热时效过程后有所增加。氢离子的辐照效应可进一步提高损伤区域的纳米硬度。但辐照形成的{011}<111>滑移系结构明显抑制了离子辐照诱导的位错和旋光分解诱导的元素偏析的硬化效应。在原位透射电子显微镜（TEM）拉伸过程中，发生了严重的变形，并沿着一条斜向贯穿整个样品区域的滑移带延伸。最后，在变形中心区域形成裂纹，并沿着裂纹尖端向辐照损伤侧传播，最终导致样品断裂。这项研究对提高核电站使用的 Z3CN20.09M DSS 的性能具有重要参考价值。

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Effect of hydrogen ion irradiation on the mechanical properties of thermally aged Z3CN20.09M duplex stainless steel

In order to investigate the synergistic effect of thermal aging and hydrogen, Z3CN20.09M duplex stainless steels (DSS) were thermal aged at 400 °C and then the irradiated by hydrogen ions. Due to the segregation of the Fe and Cr elements induced by spinodal decomposition, the nanohardness of the ferrite phase increased after thermal aging process. The irradiation effects by hydrogen ion could further increase the nanohardness of the damage region. But the {011}<111> slip system structures formed by the irradiation significantly suppressed the hardening effects of the ions irradiation induced dislocations and spinodal decomposition induced element segregation. During the in-situ transmission electron microscopy (TEM) tensile process, severe deformation occurred and extended along a slip band that ran diagonally across the entire sample region. At last, a cracking formed at the deformation center area and propagated along the crack tip towards the irradiation damage side, ultimately leading to the sample fracture. This study serves as a valuable reference for improving the properties of Z3CN20.09M DSS utilized in nuclear plants.

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来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.