Effect of of Pre-hydriding on the Burst Behavior of the Zirconium Cladding under Loss-of-Coolant Accident Condition

被引：8

作者：

Lim, Do Wan ^{[1
,2
]}

Park, Dong Jun ^{[1
]}

Park, Jeong Yong ^{[1
]}

Jang, Ho ^{[2
]}

Yoo, Jong Sung ^{[3
]}

Mok, Yong Kyoon ^{[3
]}

Suh, Jung Min ^{[3
]}

Lee, Kang Moon ^{[3
]}

机构：

[1] LWR Fuel Technol Div, Taejon 305353, South Korea

[2] Korea Univ, Seoul, South Korea

[3] KEPCO Nucl Fuel, Taejon 305353, South Korea

来源：

KOREAN JOURNAL OF METALS AND MATERIALS | 2014年 / 52卷 / 07期

关键词：

alloys; deformation; mechanical properties; hardness test; zirconium fuel cladding; ZIRCALOY-4; OXIDATION; EMBRITTLEMENT; KINETICS; STEAM;

D O I：

10.3365/KJMM.2014.52.7.493

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To investigate the effects of hydrogen on the rupture behavior and mechanical property of ballooned-zirconium cladding after a loss-of-coolant accident, simulated loss-of-coolant-accident tests were carried out using pressurized-zirconium-tube samples with and without hydrogen pre-charging. A pre-hydrided cladding sample showed lower deformation in the ballooned area and lower rupture temperature than the as-received cladding sample. Ballooned cladding without hydrogen charging showed no significant difference in mechanical property, in spite of a wide range of values for circumferential strain and of a different balloon shape caused by a different heating rate. Pre-hydrided cladding, however, showed an increase in maximum load with increasing heating-rate. The strong relationship between hydrogen content and burst behavior during the loss-of-coolant accident was analyzed and the mechanism by which hydrogen hardens zirconium alloy was explained.

引用

页码：493 / 502

页数：10

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