Make known each other S.J.T.0. Phase Transformation and Applications My name is 。。 I am from 1ie~~、ery much!© SJTU Thermodynamics of Materials Spring2008©X.J.Jin Introduction 7/50
Phase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2008 © X. J. Jin Introduction 7/50 Make known each other
Contents of today S.J.T.0. Phase Transformation and Applications What is Materials Science and Engineering? The role of thermodynamics in MSE. -Cases Introduction to the course/Syllabus ·Review/Keywords SJTU Thermodynamics of Materials Spring2008©X.J.Jin Introduction 8/50
Phase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2008 © X. J. Jin Introduction 8/50 Contents of today • What is Materials Science and Engineering? • The role of thermodynamics in MSE. •Cases • Introduction to the course / Syllabus • Review / Keywords
History of Materials S.J.T.0. Phase Transformation and Applications ,器时代 青制器时代 项器时代 电/材时代 冯端，师昌绪，刘治国主编 材料导论 化学工业出版社，2002年5月第一版 SJTU Thermodynamics of Materials Spring2008©X.J.Jin Introduction 9/50
Phase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2008 © X. J. Jin Introduction 9/50 冯端，师昌绪，刘治国主编 材料导论 化学工业出版社，2002年5月第一版 History of Materials
History of Materials S.J.T.0. Phase Transformation and Applications Stone Age (-35.000 Years) 10r Aramid Fibers. Bronze Age (90Lx"uALISN 8 Carbon Fibers (~-1800Yeas) Iron Age Polymer Age (-3,300 Yeais) (50 Years) S Composites Concrete/Steel (60置ear图 Silicon Age (35Ye3 2 Information Age Wood. Cast Stone Bronze Steel Aluminium (-15 Years) 方 0 YEAR 1800 19002000 500040003000200010000 10001900 19601990 2010 BC AD SJTU Thermodynamics of Materials Spring 2008 X.J.Jin Introduction 10/50
Phase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2008 © X. J. Jin Introduction 10/50 History of Materials
传统材料在国民经济中的地位与可持续发展(2) S.J.T.U. Phase Transformation and Applications 5 汽车用钢，特别是多相钢 40 TRIP steels M.Militger,Science,2002, 298:975. 30- DP steels Martensitic 20- steels Conventional The weight fraction of steel steels 300 500700900110013001500 and iron in an average family Tensile strength(MPa) car has decreased from 74% in 1978 to 67%in 1997.Yet Ductility-strength relationship of steels.As tensile strength increases,corventional steels over the same time period, show a decrease in elongation to failure,which is a measure of formability:that is,the higher its that of high-strength steels strength,the less formable is the steeL Dual- has risen from 4%to 9% phase (DP)and TRIP steels deviate from this gen- eral rule by combining high strength with signifi- cantly higher elongation values than those of conventional steels of the same strength leveL SJTU Thermodynamics of Materials 11/JU
Phase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2008 © X. J. Jin Introduction 11/50 传统材料在国民经济中的地位与可持续发展（2） M. Militger, Science, 2002, 298: 975. 汽车用钢，特别是多相钢 The weight fraction of steel and iron in an average family car has decreased from 74% in 1978 to 67% in 1997. Yet over the same time period, that of high-strength steels has risen from 4% to 9%