Tensile strength tempered martensite

Alloys with Less Than 10 wt.% Mn. Alloys containing less than 10% Mn show transformation behavior similar to that of the Fe Ni alloys For Mn contents of 8 to 10%, the as-cooled structure is a dislocated lath martensite. Both the yield and tensile strengths of the alloys increase with Mn concentration. The ductile-brittle transition temperature, however, is high therefore, these alloys are unsuited for cryogenic service in the as-cooled conditions. As with Fe-Ni alloys, a tempering treatment in the two-phase (a + y) region causes a decrease in the ductile-brittle transition temperature of ferritic Fe-Mn alloys This beneficial tempering... 

KWO] Chaipy impact testing, mechanical tests (on the Instron machine) Tempered martensite embrittlement (TME), impact toughness, ultimate tensile strength... 

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