FeMnSi ve FeMnSiCr Şekil Hafızalı Alaşımı Üzerinde Doğal Yaşlanmanın Etkisi

Bu çalışmada (ağırlıkça %) Fe-30Mn-6Si ve Fe-30Mn-6Si-5Cr şekil hafızalı alaşımı kullanıldı. Yaşlanmamış ve oda sıcaklığında doğal yaşlanmış şekil hafızalı alaşım numunelerinin diferansiyel tarama kalorimetre (DSC) ve X-ışını difraksiyon (XRD) ölçümleri yapıldı. DSC ölçümleri ile şekil hafıza etkisi belirlendi ve aktivasyon enerjileri hesaplandı. XRD ölçümleri ile FeMnSi veFeMnSiCr alaşım numunelerinin yaşlanma ile meydana gelen yapısal değişimleri incelendi. Ayrıca, Cr elementinin yaşlanma üzerindeki etkisi belirlendi.

Anahtar Kelimeler:

Şekil hafıza etkisi, yaşlanma, aktivasyon enerjisi, X-ışını difraksiyonu

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[1] Sampath V, Ayyagari SVG, Srinithi R, Rajam AGD, Andra S, Anusha A. Theoretical Analysis of Hysteresis and Characteristic Transition Temperatures of Iron-Based Memory Metals. Trans Indian Inst Met. 2021; https://doi.org/10.1007/s12666-020-02147-9.
[2] Todaka T, Yasuoka T, Enokizono M, Tsutsumi K, Groessinger R, Turtelli RS, Bormio- Nunes C, Wiesinger G. Magnetic properties of iron-based ferromagnetic shape-memory ribbon produced by melt-spinning technique. Journal of Magnetism and Magnetic Materials 2006; 304: e516–e518 doi:10.1016/j.jmmm.2006.02.140.
[3] Druker AV, Perotti A, Esquivel I, Malarría YJ. Design of Devices and Manufacturing of Fe-Mn-Si Shape Memory Alloy Couplings. Procedia Materials Science 2015; 8: 878 – 885.
[4] Otsuka H, Yamada H, Maruyama T, Tanahashsi H, Matsuda S, Murakami M. Effects of Alloying Additions on Fe-Mn-Si ShapeMemoryAlloys. ISIJ International 1990; 30(8): 674-679.
[5] Todaka T, Teshima S, Enokizono M. Magnetic properties and shape memory effect of Fe-Cr-Ni-Si-Mn alloys produced by melt spinning technique. J. Mater. Process. Technol. 2007;181: 217–221.
[6] Wan J, Chen S. Martensitic transformation and shape memory effect in Fe-Mn-Si based alloys. Curr. Opin. Solid StateMater. Sci. 2005; 9: 303–312.
[7] Leinenbach C , Lee WJ, Lis A, Arabi-Hashemi A, Cayron C, Weber B. Creep and stress relaxation of a FeMnSi-based shape memory alloy at low temperatures. Materials Science&Engineering A 2016; 677: 106–115 http://dx.doi.org/10.1016/j.msea.2016.09.042.
[8] Bujoreanu LG, Stanciu S, Özkal B, Comaneci RI, Meyer M. Comparative study of Fe-Mn-Si-Cr-Ni shape memory alloys obtained by classical and by powder metallurgy, respectively. In: ESOMAT 2009; 05003.
[9] Balo ŞN. A Comparative Study on Crystal Structure and Magnetic Properties of Fe-Mn-Si and Fe-Mn-Si-Cr Alloys. J Supercond Nov Magn. 2013; 26:1085–1088 DOI 10.1007/s10948-012-1841-5.
[10] Bliznuk VV, Gavriljuk VG, Kopitsa GP, Grigoriev SV, Runov VV. Fluctuations of chemical composition of austenite and their consequence on shape memory effect in Fe–Mn–(Si, Cr, Ni, C, N) alloys. Acta Materialia 2004; 52:4791–4799. doi:10.1016/j.actamat.2004.06.036.
[11] Lin HC, Wang TP, Lin KM, Chung CY, Wang PC, Ho WH. The stress relaxation of a Fe59Mn30Si6Cr5 shape memory alloy. J. Alloys Compd. 2008; 466:119–125.
[12] Takeshi S, Kapusta Cz, Takasaki A. Synthesis and characterization of Fe–Mn–Si shape memory alloy by mechanical alloying and subsequent sintering. Materials Science & Engineering A 2014; 592: 88-94.
[13] Teixeira CA, Coelho RE, Lima PC, Conrado LC,Mendonça ES, Santos MS, Costa GKA, Carvalho CO, Lima EPR. Influence of Chromıum in the phase Transformation Temperature of a CuAlNi Sahpe Memory Alloy.2015; 23rd ABCM International Congress of Mechanical Engineering December 6-11, 2015, Rio de Janerio, RJ, Brazil.
[14] Wellen RMR, Canedo EL. On the Kissinger equation and the estimate of activation energies for non-isothermal cold crystallization of PET. Polymer Testing 2014; 40: 33.38 http://dx.doi.org/10.1016/j.polymertesting.2014.08.008.
[15] Canbay CA, Karaduman O, Ünlü N, Özkul İ. An exploratory research of calorimetric and structural shape memory effect characteristics of Cu–Al–Sn alloy. Physica B 2020; 580:411932 https://doi.org/10.1016/j.physb.2019.411932.
[16] Caenegem NV, Duprez L, Verbeken K, Segers D, Houbaert Y. Stresses related to the shape memory effect in Fe-Mn-Si based shape memory alloys. Materials Science and Engineering A, 2008; 481-482: 183-189 doi:10.1016/j.msea.2007.02.159.
[17] Chou TS, Lin HC, Lin KM,Wu SK. Characterization of Internal Friction of Fe-30Mn-6Si-5Cr. Scripta mater. 2000; 42: 445-450.
[18] Lin HC, Lin KM, Wu SK, Wang TP, Hsiao YC. Effects of thermo-mechanical training on a Fe59Mn30Si6Cr5 shape memory alloy. Materials Science and Engineering A, 2006; 438-440: 791-795 doi:10.1016/j.msea.2006.02.119.
[19] Balo ŞN. A Comparative Study on Crystal Structure and Magnetic Properties of Fe-Mn-Si and Fe-Mn-Si-Cr Alloys. J Supercond Nov Magn. 2013; 26:1085–1088 DOI 10.1007/s10948-012-1841-5.
[20] B.D. Cullity, Elements of X-Ray Diffraction, Addison-Wesley Publishing Company, Massachussets, 1978.
[21] Balo, Ş N., & Yakuphanoglu, F. (2013). The effects of Cr on isothermal oxidation behavior of Fe-30Mn-6Si alloy. Thermochimica Acta, 560, 43-46. doi:10.1016/j.tca.2013.03.005.
[22] Canbay CA, Karaduman O, Ünlü N, Aziz, SB, Özkul İ. Heat treatment and quenching media effects on the thermodynamical, thermoelastical and structural characteristics of a new Cu-based quaternary shape memory alloy. Composites Part B-Engineering, 2019;174:106940- https://doi.org/10.1016/j.compositesb.2019.106940.