压力容器
壓力容器
압력용기
2014年
9期
1-7,35
,共8页
钱王洁%王荣山%刘向兵%黄平%强文江%曾寻
錢王潔%王榮山%劉嚮兵%黃平%彊文江%曾尋
전왕길%왕영산%류향병%황평%강문강%증심
反应堆压力容器钢%磁性参数%无损评估%磁硬度系数
反應堆壓力容器鋼%磁性參數%無損評估%磁硬度繫數
반응퇴압력용기강%자성삼수%무손평고%자경도계수
reactor pressure vessel steel%magnetic parameters%nondestructive evaluation%magnetic hard-ness coefficient
通过磁性检测方法获得国产反应堆压力容器钢冷轧后的磁性能，研究组织敏感磁性参数与冷轧压下量和力学性能的变化关系。试验结果表明，从磁滞回线获得的磁性参数对材料的晶体缺陷非常敏感，在冷轧前后变化显著。特别是趋近饱和阶段的磁硬度系数，随着冷轧压下量增加而不断增加，且与硬度和屈服强度呈线性关系，其关系式可表达为：HV ＝1．282×a -1200；Rp0．2＝6．4×a-6533。
通過磁性檢測方法穫得國產反應堆壓力容器鋼冷軋後的磁性能，研究組織敏感磁性參數與冷軋壓下量和力學性能的變化關繫。試驗結果錶明，從磁滯迴線穫得的磁性參數對材料的晶體缺陷非常敏感，在冷軋前後變化顯著。特彆是趨近飽和階段的磁硬度繫數，隨著冷軋壓下量增加而不斷增加，且與硬度和屈服彊度呈線性關繫，其關繫式可錶達為：HV ＝1．282×a -1200；Rp0．2＝6．4×a-6533。
통과자성검측방법획득국산반응퇴압력용기강랭알후적자성능，연구조직민감자성삼수여랭알압하량화역학성능적변화관계。시험결과표명，종자체회선획득적자성삼수대재료적정체결함비상민감，재랭알전후변화현저。특별시추근포화계단적자경도계수，수착랭알압하량증가이불단증가，차여경도화굴복강도정선성관계，기관계식가표체위：HV ＝1．282×a -1200；Rp0．2＝6．4×a-6533。
Magnetic properties of cold rolled Chinese reactor pressure vessel steel were obtained by mag -netic measurements .The relationship between microstructure -sensitive magnetic properties and rolling reduction ,mechanical properties was investigated in detail .The experimental results show that magnetic parameters deduced from magnetic hysteresis loop are very sensitive to lattice defects .There exist signifi-cant changes in these parameters before and after cold rolling deformation .Especially ,the magnetic hard-ness coefficient derived from the approach to saturation stage increases with increasing rolling reduction continually and has a linear relationship with vickers hardness and yield strength .The relationship be-tween magnetic hardness coefficient and mechanical properties can be expressed as HV =1 .282 ×a-1200,Rp0.2 =6.4 ×a-6533 respectively.
