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含0.065%Ti的高強度低合金鋼中夾雜物

Inclusions in HSLA steel containing 0.065%Ti

  • 摘要: 本文用掃描電鏡分析了鈦質量分數為0.065%的高強度低合金鋼在鈣處理后鑄坯和板材中夾雜物的形貌和大小;用EDS探針分析了夾雜物的成分.結果表明鈦質量分數為0.065%的高強度低合金鋼的夾雜物絕大部分為CaO-Al2O3-TiOx-CaS系夾雜物,并有少量的TiN,統計表明鋼液鈣處理效果良好.最后通過熱力學計算分析了鋼中TiN、CaS夾雜物的析出規律.

     

    Abstract: The morphology and sizes of inclusions after liquid steel Ca treatment,in the slab and in the plate were researched by SEM for high strength and low alloy (HSLA) steel containing 0.065%Ti.The composition of inclusions was studied by EDS.The results show that most of inclusions in the slab and plate are CaO-Al2O3-TiOx-CaS inclusions,and few of them are TiN inclusions. The inclusions have been modified well by Ca treatment.The precipitations of TiN and CaS have been analyzed by thermodynamic calculation.

     

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