MD Simulations of Collision Cascades in α-Ti. Cluster Statistics and Governing Mechanisms of Point Defect Cluster Formation

被引：1
|
作者：
Voskoboinikov, R. E. [1 ,2 ]
机构：
[1] Natl Res Nucl Univ, MEPhI, Moscow 115409, Russia
[2] Kurchatov Inst, Natl Res Ctr, Moscow 123182, Russia
来源：
PHYSICS OF METALS AND METALLOGRAPHY | 2023年 / 124卷 / 08期
关键词：
alpha-titanium; irradiation; collision cascades; primary damage; Frenkel pairs; clusters of point defects; one-dimensional diffusion; molecular dynamics; PRIMARY DAMAGE CREATION; DISPLACEMENT CASCADES; COPPER;
D O I：
10.1134/S0031918X23601154
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A comprehensive statistical treatment is conducted to analyse the outcomes of MD simulations of collision cascades in alpha-titanium in a wide range of primary knocked-on atoms (PKAs) energy 5 keV <= E-PKA <= 25 keV and irradiation temperature 100 K <= T <= 900 K. The fractions of vacancies epsilon(v) and interstitial atoms epsilon i in clusters of point defects formed in individual cascades and their average values <epsilon(v)> and <epsilon(i)>, the average sizes of vacancy < N-vac > and interstitial < N-SIA > clusters, and the average number of vacancy < N-vac > and interstitial < N-SIA > clusters per cascade are evaluated. The physical mechanisms that determine the dependence of <epsilon v >, <epsilon i >, < N-vac >, < N-SIA >, < Y-vac >, and < Y-SIA > on simulation parameters (E-PKA,T) have been proposed.
引用
收藏
页码：751 / 757
页数：7
相关论文
共 29 条
  • [1] MD Simulations of Collision Cascades in α-Ti. Cluster Statistics and Governing Mechanisms of Point Defect Cluster Formation
    R. E. Voskoboinikov
    Physics of Metals and Metallography, 2023, 124 : 751 - 757
  • [2] MD Simulations of Collision Cascades in α-Ti. The Residual Number of Radiation Defects, Cascade Relaxation Time, and Displacement Cascade Region Morphology
    R. E. Voskoboinikov
    Physics of Metals and Metallography, 2023, 124 : 743 - 750
  • [3] Defect cluster formation in displacement cascades in copper
    Osetsky, YN
    Bacon, DJ
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2001, 180 : 85 - 90
  • [4] MD Simulations of Collision Cascades in α-Ti. The Residual Number of Radiation Defects, Cascade Relaxation Time, and Displacement Cascade Region Morphology
    Voskoboinikov, R. E.
    PHYSICS OF METALS AND METALLOGRAPHY, 2023, 124 (08): : 743 - 750
  • [5] Point defect cluster formation in iron displacement cascades up to 50 keV
    Stoller, RE
    MICROSTRUCTURAL PROCESSES IN IRRADIATED MATERIALS, 1999, 540 : 679 - 684
  • [6] Point defect simulations by finite cluster method
    Kadolkar, Charudatt Y.
    Sahariah, Munimal B.
    COMPUTATIONAL MATERIALS SCIENCE, 2008, 44 (02) : 443 - 448
  • [7] Statistical analysis of cluster production efficiency in MD simulations of cascades in copper
    Osetsky, YN
    Bacon, DJ
    Singh, BN
    JOURNAL OF NUCLEAR MATERIALS, 2002, 307 (2 SUPPL.) : 866 - 870
  • [8] Optimal sampling of MD simulations of primary damage formation in collision cascades
    Voskoboinikov, Roman
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2020, 479 (479): : 18 - 22
  • [9] Relevancy of displacement cascades features to the long term point defect cluster growth
    Hou, M.
    Souidi, A.
    Becquart, C. S.
    Domain, C.
    Malerba, L.
    JOURNAL OF NUCLEAR MATERIALS, 2008, 382 (2-3) : 103 - 111
  • [10] The influence of crater formation for electron excitation processes in cluster induced collision cascades
    Weidtmann, B.
    Duvenbeck, A.
    Wucher, A.
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2015, 352 : 186 - 189
123