Growth of surface structures correlated with structural and mechanical modifications of brass by laser-induced Si plasma ions implantation

Ahmad, Shahbaz; Bashir, Shazia; Rafique, Muhammad; Yousaf, Daniel

doi:10.1007/s00339-016-0750-z

Cited by 8 publications

(2 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The event of atomic displacement/PKAs formation occurs in a very short time (10 −18 s) [21]. The passage of PKAs through the lattice causes a series of collisions with other atoms and thus displacement cascades are produced [22,23]. If the PKA does not have sufficient energy to displace other atoms then it is terminated as an interstitial between the lattice sites.…”

Section: Surface Morphologymentioning

confidence: 99%

“…The track of PKAs is then heated to a high temperature for a short time (10 −8 s) which causes a thermal spike in the vicinity of point defects [21]. The rise of localized temperature might facilitates the annihilation of some of the defects [23,24]. The defects that survive in this process are present in the material in the form of vacancies and interstitials and their clusters.…”

Section: Surface Morphologymentioning

confidence: 99%

See 1 more Smart Citation

Impact of variable energy hydrogen ions on structural and mechanical properties of Zircaloy-4

Afzal¹,

Rafique²,

Abbasi³

et al. 2018

Phys. Scr.

View full text Add to dashboard Cite

This paper demonstrates hydrogen ion (H+) induced structural and mechanical changes in Zircaloy-4 correlated with its surface morphology. The specimens of Zircaloy-4 were irradiated with H+ at room temperature using a pelletron accelerator. The ion energy was varied from 1 to 4 MeV in four equal steps while keeping the dose fixed at 1 × 1014 H+ cm−2. The range of H+ inside Zircaloy-4, investigated through SRIM software, was 10.4 μm, 29.1 μm, 54.1 μm and 85 μm for 1 MeV, 2 MeV, 3 MeV and 4 MeV irradiated specimens, respectively. X-ray diffraction patterns of irradiated Zircaloy-4 exhibited variations in the width and position of Zr diffraction peaks. The Williamson–Hall analysis of these peaks depicted inconsistent changes in crystallite size and strain with increase of H+ energy. The surface morphology revealed the formation of bubbles and cavities in specimens irradiated with 1 MeV ions. With increasing ion energy above 1 MeV, small cavities and particles clusters were observed. The mechanical testing results indicated an increase in the micro-hardness of the sample irradiated with 1 MeV H+, however, the micro-hardness decreased with increase of ion energy greater than 1 MeV. The obtained results were elucidated on the basis of variable energy H+ interaction with Zircaloy-4 and annihilation of ions induced defects at higher energies.

show abstract

Section: Surface Morphologymentioning

confidence: 99%