Acta Metallurgica Sinica (English Letters) ›› 1989, Vol. 2 ›› Issue (5): 364-367.

• Research paper • Previous Articles     Next Articles

SUBSTRUCTURE AND CRYSTAL MORPHOLOGY OF MARTENSITE IN MEDIUM CARBON IRON ALLOYS

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   

  • Received:1989-10-25 Revised:1989-10-25 Online:1989-10-25 Published:2009-10-10

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