Bulk phase transformation kinetics were not well understood before Davenport and Bain developed time鈥搕emperature-transformation (TTT) diagrams for steel alloys in the 1930s. These powerful diagrams revolutionized the heat treatment of steel and other alloys. Grain boundaries and internal interfaces are...
TTT diagram is an important reference in making heat treatment procedure for steels. A program is introduced in this paper with which the TTT diagram of M30Mn2 steel is fitted through cubic spline treatment of the test data, and a precise and smooth TTT curve is auto drafted by programming ...
关键词:42CrMo4钢;TTT曲线;热模拟试验机中图分类号:TG142.42;TG151.3 文献标识码:A 文章编号:0254-6051(2009)01-0078-03MeasurementofTTTdiagramsof42CrMo4 steelandanalysisforseparationofupperandlowerbainitesinthebainiteCcurveZHANGYi-yang, CHENNai-lu, ZHANGWei-min, HANLi-zhan(SchoolofMaterialsScienceand...
TTTdiagramstandsfor“time-temperature-transformation”diagram.Itis alsocalledisothermaltransformationdiagram Definition:TTTdiagramsgivethekineticsofisothermal transformations. 2 DeterminationofTTTdiagramforeutectoidsteel DavenportandBainwerethefirsttodeveloptheTTTdiagram ofeutectoidsteel.Theydeterminedpearliteandbainite portion...
4) austenite isothermal transformation diagram 奥氏体等温转变曲线 1. According to austenite isothermal transformation diagram,a heat treatment process for producing the left and right pincers through fixed heating time and the position was put forward. 借助奥氏体等温转变曲线 ,创立了定时定位的热处理...