The irradiation hardening of Ni-Mo-Cr and Ni-W-Cr alloy under Xe26+ ion irradiation

Chen, Huaican; Hai, Yang; Liu, Renduo; Jiang, Li; Ye, Xiang‐Xi; Jianjian, Li; Xue, Wandong; Wang, Wanxia; Tang, Ming; Liu, Yan; Yin, Wen; Zhou, Xueqian

doi:10.1016/j.nimb.2018.02.018

Cited by 19 publications

(4 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the irradiation damage fluence was in the range of 5-10 dPa, the relation curve between the hardness and the depth basically coincided, indicating that there was a hardening saturation phenomenon. ese results are similar to the results reported by Chen et al [35].…”

Section: Nanoindentationsupporting

confidence: 92%

See 1 more Smart Citation

Xe Ion Irradiation-Induced Microstructural Evolution and Hardening Effect of Nickel-Base Superalloy

Hou

Lü

et al. 2021

Science and Technology of Nuclear Installations

Self Cite

View full text Add to dashboard Cite

The nickel-base superalloy Hastelloy N was irradiated using 1 MeV Xe20+ and 7 MeV Xe26+ ions with displacement damage ranging from 0.5 dPa to 10 dPa at room temperature (RT). The irradiated Ni-based superalloy was characterized with transmission electron microscopy (TEM), XRD, and nanoindenter to determine the changes in microstructural evolution and nanoindentation hardness. The TEM results showed that ion irradiation induced a large number of defects such as black spots and corrugated structures and the second phase was rapidly amorphized after being irradiated to a fluence of 0.5 dPa. The XRD results showed that the Hastelloy N alloy sample did not undergo lattice distortion after ion irradiation. An obvious irradiation hardening phenomenon was observed in this study, and the hardness increased with Xe ion fluence. The pinning effect in which the defects can become obstacles to the free movement of dislocation may be responsible for the irradiation-induced hardening.

show abstract

Section: Nanoindentationsupporting

confidence: 92%

“…In the depth larger than 200 nm, the nanohardness decreased slightly with penetration depth. is can be explained by the Nix-Gao model [35] which predicts the hardness-depth profile to obey the following equation:…”

Section: Nanoindentationmentioning

confidence: 99%

Xe Ion Irradiation-Induced Microstructural Evolution and Hardening Effect of Nickel-Base Superalloy

Hou

Lü

et al. 2021

Science and Technology of Nuclear Installations

Self Cite

View full text Add to dashboard Cite

show abstract

“…[7] Since, the irradiation damage of these alloys is of paramount importance, a number of researches have used ion irradiation as a surrogate for expected neutrons. [8][9][10][11] For instance, in our previous work [12] we showed the temperature effect on the radiation damage in Ni-Mo-Cr (GH3535) alloy weld metal by 8-MeV Ni 3+ ion irradiation. Similarly, the microstructural changes induced by Xe 26+ ions irradiation with a dose of up to 10 dpa at different temperatures in GH3535 alloy has been investigated in Ref.…”

Section: Introductionmentioning

confidence: 99%

Effect of tellurium (Te⁴⁺) irradiation on microstructure and associated irradiation-induced hardening*

Huang¹,

Liu²,

Lei³

et al. 2021

Chinese Phys. B

View full text Add to dashboard Cite

The GH3535 alloy samples were irradiated using 15-MeV Te4+ ions at 650 °C to a dose of 0.5, 3.0, 10, and 20 dpa, respectively. The Te atoms distribution and microstructure evolution were examined by electron probe microanalysis (EPMA) and transmission electron microscopy (TEM). The nano-indenter was then used to measure the nano-hardness changes of samples before and after irradiation. TEM results showed the formation of dislocation loops in the irradiated samples. Their mean diameters increase with the increase of irradiation dose and tends to be saturated when irradiation dose exceeds 10 dpa. The ratio of yield strength increments calculated by dispersed barrier hardening (DBH) model is basically consistent with that of nano-hardness increments measured by nano-indenter. In addition, the relationship between the nano-hardness increments and dpa for the GH3535 alloy irradiated by Te ions has been revealed in the study.

show abstract

“…Furthermore, it can cause materials swelling, rapid creep, hardening, and embrittlement, which accelerates the degradation of the material macroscopic properties and seriously threatens the safe operation and service life of nuclear reactors. [3,4] Therefore, the nuclear materials are critical to the successful operation of nuclear energy systems.…”

Section: Introductionmentioning

confidence: 99%

Thermal desorption characteristic of helium ion irradiated nickel-base alloy*

Zhu

Zhao

et al. 2020

Chinese Phys. B

View full text Add to dashboard Cite

The nickel-base alloy is one of the leading candidate materials for generation IV nuclear reactor pressure vessel. To evaluate its stability of helium damage and retention, helium ions with different energy of 80 keV and 180 keV were introduced by ion implantation to a certain dose (peak displacement damage 1–10 dpa). Then thermal desorption spectroscopy (TDS) of helium atoms was performed to discuss the helium desorption characteristic and trapping sites. The desorption peaks shift to a lower temperature with increasing dpa for both 80 keV and 180 keV irradiation, reflecting the reduced diffusion activation energy and faster diffusion within the alloy. The main release peak temperature of 180 keV helium injection is relatively higher than that of 80 keV at the same influence, which is because the irradiation damage of 180 keV, helium formation and entrapment occur deeper. The broadening of the spectra corresponds to different helium trapping sites (He–vacancies, grain boundary) and desorption mechanisms (different He n V m size). The helium retention amount of 80 keV is lower than that of 180 keV, and a saturation limit associated with the irradiation of 80 keV has been reached. The relatively low helium retention proves the better resistance to helium bubbles formation and helium brittleness.

show abstract

The irradiation hardening of Ni-Mo-Cr and Ni-W-Cr alloy under Xe26+ ion irradiation

Cited by 19 publications

References 36 publications

Xe Ion Irradiation-Induced Microstructural Evolution and Hardening Effect of Nickel-Base Superalloy

Xe Ion Irradiation-Induced Microstructural Evolution and Hardening Effect of Nickel-Base Superalloy

Effect of tellurium (Te⁴⁺) irradiation on microstructure and associated irradiation-induced hardening*

Thermal desorption characteristic of helium ion irradiated nickel-base alloy*

Contact Info

Product

Resources

About

The irradiation hardening of Ni-Mo-Cr and Ni-W-Cr alloy under Xe26+ ion irradiation

Cited by 19 publications

References 36 publications

Xe Ion Irradiation-Induced Microstructural Evolution and Hardening Effect of Nickel-Base Superalloy

Xe Ion Irradiation-Induced Microstructural Evolution and Hardening Effect of Nickel-Base Superalloy

Effect of tellurium (Te4+) irradiation on microstructure and associated irradiation-induced hardening*

Thermal desorption characteristic of helium ion irradiated nickel-base alloy*

Contact Info

Product

Resources

About

Effect of tellurium (Te⁴⁺) irradiation on microstructure and associated irradiation-induced hardening*