SUBSTRUCTURE AND CRYSTAL MORPHOLOGY OF MARTENSITE IN MEDIUM CARBON IRON ALLOYS

Abstract

Abstract: The morphologic,substructural and crystallographic characteristics of martensite in steels 60 and 60Si2Mn have been investigated by means of optical and transmission electron microscopy combined with B-M phenomenological crystallographic theory.The average hab- it plane of martensite in medium carbon iron alloys is{225}_f.Experimental data on the habit plane and the orientation relationship between the austenite and martensite are in agreement with the B-M theoretical calculation of using the Bain strain and lattice invariant shear on (100)[011]_f.

Key words: Medium carbon steel, martensite transformation, morphology, substructure

LIU Yumen HE Zhirong Xi'an Jiaotong University,Xi'an,China Professor,Dept.of Materials Science and Engineering,Xi'an Jiaotong University,Xi'an,China. SUBSTRUCTURE AND CRYSTAL MORPHOLOGY OF MARTENSITE IN MEDIUM CARBON IRON ALLOYS[J]. Acta Metallurgica Sinica (English Letters), 1989, 2(5): 364-367.

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SUBSTRUCTURE AND CRYSTAL MORPHOLOGY OF MARTENSITE IN MEDIUM CARBON IRON ALLOYS

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