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| TEM STUDY OF SIX REPRESENTATIVE LOW CARBON MARTENSITI STEELS |
| TAN Yuxu Xi'an Jiaotong University |
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Cite this article:
TAN Yuxu Xi'an Jiaotong University. TEM STUDY OF SIX REPRESENTATIVE LOW CARBON MARTENSITI STEELS. Acta Metall Sin, 1985, 21(3): 7-148.
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Abstract Six representative low carbon martensitic steels were analyzed under TEM,Observations showed as follow:The thin retained austenite films usually exist in the structure of the low car-bon(namely,0.1—0.25 wt-%C)martensitic steels;ε-carbides formed in auto-tempering precipitate on the matrix of the lath mar-tensites;Internal twins exist in part of some lath matrix of the six steels;ε-carbides transform into cementites when tempered at 300-400℃.Cementitesform in three sites,lath boundaries,{110}_M planes and twin boundaries;Twins disappear when tempering temperature raise to 500℃ but the outlineof lath boundaries still keeps its original shape.
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Received: 18 March 1985
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1 松田昭一;井上泰;三村宏;冈村义弘,钢の强韧性,日本铁钢学会,日本金属学会编,Climax Molybdenum Development Co.(Jpn) Ltd.,1971,p.45．
2 Naylor,J.P.,Metall.Trans.,10A(1979) ,861．
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4 Clark,R.A.;Thomas,G.,Metall.Trans.,6A(1975) ,696．
5 Bhadeshia,H.K.D.H.;Edmonds,D.V.,Met.Sci.,13(1979) ,325．
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7 Chilton,J.M.;Kelly,P.M.,Acta Metall.,16(1968) ,637．
8 Raghavan,M.;Thomas,G.,Metall.Trans.,10(1979) ,1665．
9 弘津祯彦,热处理,14(1974) ,323． |
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