Program for calculation of TTT diagrams in steels
Program is enhanced version of MUCG46 and MUCG83 with possibility to use additional elements for chemical composition (C, Si, Mn, Ni, Mo, Cr, V, Co, Cu, Al, W and Fe which is calculated) from MUCG83 and calculates martensite start temperature as a function of chemical composition, prior austenite grain size, external stress and pre-strain as in MUCG46. Composition is entered in wt %, grain size in micrometers with default grain size 40 micrometers. Tensile or compressive pre-stress and pre-strain are entered in MPa and mm/mm, respectively. Allowable composition range limits are outputted before number needs to be entered to the screen. All input and output from the program are to the screen and TTT diagram can be constructed from output and widmanstatten start temperatures, growth limited bainite start temperature and martensite start temperature are given for entered conditions at the end.
Keywords: Widmanstatten, bainite, martensite, start temperatures