RELATIONSHIP BETWEEN DEVELOPMENT OF CRACKS, CHANGES OF SUBSTRUCTURE AND STRAINS STATE OF TUNGSTEN IRRADIATED BY PLASMA HEAT LOADS RELEVANT TO ITER TRANSIENT EVENTS

被引：0
作者：
Bazdyreva, S. V. [1 ]
Makhlaj, V. A. [2 ]
Malykhin, S. V. [1 ]
Pugachov, A. T. [1 ]
机构：
[1] Natl Tech Univ, Kharkiv Polytech Inst, Kharkov, Ukraine
[2] Inst Plasma Phys NSC KIPT, Kharkov, Ukraine
来源：
PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY | 2014年 / 06期
关键词：
SIMULATION; TARGETS;
D O I：
暂无
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
A paper reported the results of changes of structure and stressed state in tungsten targets irradiated by hydrogen plasma in quasi-stationary accelerator QSPA Kh-50 with heat loads relevant to ITER Edge Localized Modes ( ELM). The pulsed plasma heat loads with duration of 0.25 ms and energy density up to 0.45 MJ m(-2) was applied. Maximum number of irradiating pulses achieved 150. The correlation between the structure, substructure the stressed state of the surface layers changing and cracking processes occurring as results of plasma irradiation was studied. The effect of excess vacancies and vacancy complexes in formation of the crack nucleation at the stage of the residual compressive macro-stress annealing in the initial structure was evaluated. The initial dislocation density is determined by the development of internal stresses and the cracking process in the target surface layers.
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页码：48 / 51
页数：4
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