CRDM钩爪用stellite-6合金冲击磨损性能研究  

Impact Wear Behavior of Stellite-6 of Grippers of CRDM

作　　者：周军[1] 陈勇[1] 罗强[1] 王坤[1] 何琨[1] 林震霞[1] 

机构地区：[1]中国核动力研究设计院反应堆燃料及材料重点实验室,成都610213

出　　处：《核动力工程》2016年第3期66-69,共4页Nuclear Power Engineering

基　　金：国家科技重大专项:核电站寿命管理技术研究项目(2011ZX06004-002)

摘　　要：采用自制的试验机模拟核电厂一回路水质,研究不同温度和应力下控制棒驱动机构(CRDM)钩爪用stellite-6合金的冲击磨损性能。研究结果表明:正常接触条件下,温度对冲击磨损性能的影响较小,合金尺寸变化速率约为1×10^(-8)mm/次,质量变化速率约为2×10^(-6) mg/次;高接触应力下,合金的冲击磨损机制为塑性变形和疲劳剥落;室温、90℃和150℃下,合金尺寸变化速率分别为:1.3×10^(-7) mm/次、4.7×10^(-7) mm/次和5.3×10^(-7) mm/次,质量变化速率分别为7.5×10^(-6) mg/次、4.17×10^(-5) mg/次和4.83×10^(-5) mg/次。Simulating the water chemistry of the PWR primary loop, the impact wear tests of stellite-6 which used in CRDM were carried out at different temperature and different impact force by using a specially designed impact wear test device. Results showed that the effect of temperature was not obvious when the sample was under normal impact force. The size loss of the sample was approximate 1 × 10^-8 mm, and the weight loss of the sample was approximate 2 x 10-6 mg, after 1 cycle impact. The primary wear mechanism of stellite-6 is plastic deformation and fatigue flack under high impact force. The size loss of the sample was approximate 1.3 × 10^-7 mm, 4.7 × 10^-7 mm and 5.3 × 10^-7 mm, and the weight loss of the sample was approximate 7.5 × 10^-6 mg, 4.17 × 10^-5 mg and 4.83 x 10-5 mg at room temperature, 90℃ and 150℃ respectively.

关 键 词：控制棒驱动机构(CRDM) 钩爪 Stellite-6 冲击磨损 

分 类 号：TG146.11[一般工业技术—材料科学与工程]