中国科技论文
中國科技論文
중국과기논문
Sciencepaper Online
2012年
2期
89-94,115
,共7页
李长生%徐新芳%马彪%姚长贵%王敏
李長生%徐新芳%馬彪%姚長貴%王敏
리장생%서신방%마표%요장귀%왕민
无磁钢%磁导率%力学性能%奥氏体
無磁鋼%磁導率%力學性能%奧氏體
무자강%자도솔%역학성능%오씨체
non-magnetic steel%magnetic permeability%mechanical properties%austenite
为了满足能源和交通等行业对无磁钢的需求,在实验室设计了30Mn26Al4V无磁钢的成分,进行实验钢的冶炼、热轧、固溶处理和时效处理实验研究。分析了VC、VN和V(CN)等微细粒子的析出强化、晶粒细化和提高奥氏体形核率的作用。实验钢的组织为奥氏体组织,晶粒尺寸是24-28μm,室温屈服强度556MPa,抗拉强度701MPa,断后伸长率47%;196℃屈服强度580MPa,抗拉强度890MPa,断后伸长率65%;实验钢固溶处理和时效处理后的屈服强度325-371 MPa,抗拉强度550-645 MPa,断后伸长率58%-78%,力学性能良好。实验钢热轧板及固溶和失效处理后的相对磁导率≤1.005,无磁性能良好。
為瞭滿足能源和交通等行業對無磁鋼的需求,在實驗室設計瞭30Mn26Al4V無磁鋼的成分,進行實驗鋼的冶煉、熱軋、固溶處理和時效處理實驗研究。分析瞭VC、VN和V(CN)等微細粒子的析齣彊化、晶粒細化和提高奧氏體形覈率的作用。實驗鋼的組織為奧氏體組織,晶粒呎吋是24-28μm,室溫屈服彊度556MPa,抗拉彊度701MPa,斷後伸長率47%;196℃屈服彊度580MPa,抗拉彊度890MPa,斷後伸長率65%;實驗鋼固溶處理和時效處理後的屈服彊度325-371 MPa,抗拉彊度550-645 MPa,斷後伸長率58%-78%,力學性能良好。實驗鋼熱軋闆及固溶和失效處理後的相對磁導率≤1.005,無磁性能良好。
위료만족능원화교통등행업대무자강적수구,재실험실설계료30Mn26Al4V무자강적성분,진행실험강적야련、열알、고용처리화시효처리실험연구。분석료VC、VN화V(CN)등미세입자적석출강화、정립세화화제고오씨체형핵솔적작용。실험강적조직위오씨체조직,정립척촌시24-28μm,실온굴복강도556MPa,항랍강도701MPa,단후신장솔47%;196℃굴복강도580MPa,항랍강도890MPa,단후신장솔65%;실험강고용처리화시효처리후적굴복강도325-371 MPa,항랍강도550-645 MPa,단후신장솔58%-78%,역학성능량호。실험강열알판급고용화실효처리후적상대자도솔≤1.005,무자성능량호。
The composition of 30Mn26AI4V non-magnetic steel was designed to meet the demand of non-magnetic steels in the energy and transportation industries. Experimental studies on the steelmaking, hot rolling, solution and aging heat trealment of the steel were carried out in the laboratory. The effects of small particles such as VC, VN and V(CN) on the precipitation, fine grains and austenitic nucleation were analyzed. It is fotmd that the microstmcture of the steel is austenite and the grain size is 24-28 μm. At room temperature the yield strength and tension strength are 556 MPa and 710 MPa respectively, and the elongation after fracture is 47%. At-196℃ the yield strength and tension strength are 580 MPa and 890 MPa respectively, and the elongation after fracture was 65 %. After solution and aging heat treatment, the steel shows a yield strength of 325 to 371 MPa, a tension strength of 550 to 645 MPa and an elongation of 58% to 78 %, indicating good mechanical properties. The hot rolling, solution and aging steel has a better non-magnetic property for its relative magnetic permeability is below 1.005.