Fe-%9Mn ALASIMINDA AUSTENiTE-MARTENSiTE FAZ DONUSUMUNUN KRiSTALOGRAFiK OZELLiKLERiNiN X-ISINLARI DiFRAKTOMETRE METODU iLE iNCELENMESi

Yıl 2003, Sayı: 004, 105 - 114, 15.09.2003

A.e. Çalık H.y. Ocak

Öz

Bu calismada rUBirAK MAM'da (Marmara Arastirma Merkezi) hazirlanan

Fe-%9Mn alasimi incelendi. Bu alastmtn kristalograjik ozelliklerini farklt dis

fiziksel etkenlere gore inceleyebilmek icin dort ayrt numune hazirlandi.

Numunelerin austenite-martensite faz donusumunun kristalograjik ozellikleri

X-l!jlnlan difraktometre metodu ile calist ldt. Dis jiziksel etkilerle meydana

gelen austenite-martensite fazlartna ait orgu parametrelerinin jiziksel etkilere

gore buyuk oranlarda degismedigi goruldu. Numunelerin yii:::eyinde Lath turu

martensiteler gozlemlendi.

Anahtar Kelimeler

Austenite, Martensite, Orgu Parametresi

Kaynakça

• [1] T.N. Durlu, Docentlik Tezi, Ankara Universitesi (1974), 60s.
• [2] H.Y. Ocak, Doktora rea. Gazi Universitesi (1999), 120s.
• [3] C.M. Wayman, Advanced in Materials Research, John Willey and Sons 3 (1968)
• [4] A. Borngenstam and M. Hillert, Activation Energy For Isothermal Martensite in Ferrous Alloy, Act. Metal, 45 (1997), 651 p.
• [5] M.J. Bilby and J.G. Parr, J. Iron Stell Inst., 202 (1964), lOOp.
• [6] t. Akglin, Doktora Tezi, Firat Universitesi (1981), 71s.
• [7] i. Akglin and T.N. Durlu, Observations on the Formation of E Martensite in Fe-%23.2Mn Alloy, Scripta Metallurgica et Materialia 31 (1994), 1361-1363.
• [8] Z. Nishiyama, Martensitic Transformation, Academic Press. (1978) London,467p.
• [9] E. Hornbogen, On Martensitic'Transformation Cycles, Z. Metallkd, 86 (1995), 656p.
• [10] Y. Tomato and K. Yamaguchi, Influence of a Martensite on Shape Memory in Fe-Mn Based Alloys, Journal de Physique IV, 5 (1995), 421p.
• [11] N. Navruz, Bazt Demir Alastmlartnda E Martensite'in Olusumu ve Diger Martensite Turleri ile Etkilesmesi, Doktora Tezi (1996), Ankara Universitesi, 108s.
• [12] K. Tsuzaki, S. Fukasaku, Y. Tomato and T. Maki, Effect of Pripr Deformations of Austenite on the y --7 E Martensitic Transformation in Fe- Mn Alloys, Materials Transactions, JIM 32 (1991), 22-28.
• [13] J.H. Yang and C.M. Wayman, Self-Accomondation and Shape Memory Mechanizim of E -Martensite, II. Theoreticals Considerations, 28 (1992), 37- 47p.
• [14] H. Schuman, Arc. Eisenhottenwes., 40 (1969), 1027p.
• [15] Y. Tomato, M. Strum, J.W. Morris, Metallurgical Transactions A, 17A (1986),537-547.
• [16) B.O. Cullity, Elements of X-Ray Difraction, Addison-Wesley Publishing Company Inc. (1967), London.
• [17) M.M. Woolfson, All Introduction to X-Ray Crystallograpy, Cambridge Univ. Press. (1997)
• [18] T. Kakashita, K. Kuroima and K. Shimizu, A New Model Explainable for Both the Athermal and Isothermal Natures of Martensitic Transformations in Fe-Ni-Mn Alloys, Materials Transcations, JIM 34 (1993), 423
• [19] T. Ourlu, The Effect of Plastic Deformation Upon Martensite Burst Transformation ill Fe-24%Ni-0.45%C Alloy Single Crystals, Scripta Metallurgical 12 (1978) 865
• [20] H.Y. Ocak, Fe-%3I.5Ni-%IOMn Alastmtnda Austenite-Martensite Faz Donusumunun Kristalografik ve Yaptsal Ozelliklerinin Xvlstnlari Laue Metodu ile lncelenmesi, OPU FenBilimleri Enstitusu Oergisi 2 (2001), 44.