特殊钢
特殊鋼
특수강
SPECIAL STEEL
2014年
3期
49-52
,共4页
周家林%黄高%向上%潘成刚%赖春明%胡唐国
週傢林%黃高%嚮上%潘成剛%賴春明%鬍唐國
주가림%황고%향상%반성강%뢰춘명%호당국
Q345D钢%中厚板%Ti微合金化%TiN析出物%细晶强化
Q345D鋼%中厚闆%Ti微閤金化%TiN析齣物%細晶彊化
Q345D강%중후판%Ti미합금화%TiN석출물%세정강화
研究了铁水脱硫处理-150 t转炉-RH-保护浇铸-控轧控冷工艺生产的Ti微合金化Q345D钢(/%:0.15C,0.27Si,1.36Mn,0.019Ti,0.011P,0.003S,0.026Als)30 mm ×2 500 mm中板的力学性能、组织和析出物.结果表明,Ti微合金化Q345D钢的抗拉强度≥525 MPa,屈服强度≥390 MPa,延伸率≥29%,-40℃冲击功125 J;该钢组织为珠光体+铁素体+少量索氏体,晶粒度为12 ~ 14级;钢中夹杂物主要为MnS和Ti4C2S2,钢中析出物为50 ~250 nm弥散分布的TiN;钢的强度增加主要是TiN细晶强化作用引起的.
研究瞭鐵水脫硫處理-150 t轉爐-RH-保護澆鑄-控軋控冷工藝生產的Ti微閤金化Q345D鋼(/%:0.15C,0.27Si,1.36Mn,0.019Ti,0.011P,0.003S,0.026Als)30 mm ×2 500 mm中闆的力學性能、組織和析齣物.結果錶明,Ti微閤金化Q345D鋼的抗拉彊度≥525 MPa,屈服彊度≥390 MPa,延伸率≥29%,-40℃遲擊功125 J;該鋼組織為珠光體+鐵素體+少量索氏體,晶粒度為12 ~ 14級;鋼中夾雜物主要為MnS和Ti4C2S2,鋼中析齣物為50 ~250 nm瀰散分佈的TiN;鋼的彊度增加主要是TiN細晶彊化作用引起的.
연구료철수탈류처리-150 t전로-RH-보호요주-공알공랭공예생산적Ti미합금화Q345D강(/%:0.15C,0.27Si,1.36Mn,0.019Ti,0.011P,0.003S,0.026Als)30 mm ×2 500 mm중판적역학성능、조직화석출물.결과표명,Ti미합금화Q345D강적항랍강도≥525 MPa,굴복강도≥390 MPa,연신솔≥29%,-40℃충격공125 J;해강조직위주광체+철소체+소량색씨체,정립도위12 ~ 14급;강중협잡물주요위MnS화Ti4C2S2,강중석출물위50 ~250 nm미산분포적TiN;강적강도증가주요시TiN세정강화작용인기적.