The Non-Steady State Growth of Pearlite outside the Hultgren Extrapolation

Maria Martin-Aranda; Rosalia Rementeria; Robert Hackenberg; Esteban Urones-Garrote; Shao Pu Tsai; Jen Ren Yang; Carlos Capdevila

doi:10.3390/ma9120998

The Non-Steady State Growth of Pearlite outside the Hultgren Extrapolation

Materials (Basel). 2016 Dec 14;9(12):998. doi: 10.3390/ma9120998.

Authors

Maria Martin-Aranda¹, Rosalia Rementeria², Robert Hackenberg³, Esteban Urones-Garrote⁴, Shao Pu Tsai⁵, Jen Ren Yang⁶, Carlos Capdevila⁷

Affiliations

¹ Tata Steel Research and Development, Swinden Technology Centre, Rotherham S60 3AR, UK. Maria.Aranda@tatasteel.com.
² Materalia Research Group, National Center for Metallurgical Research (CENIM-CSIC), 28040 Madrid, Spain. rosalia.rementeria@cenim.csic.es.
³ Materials Science and Technology Division, Los Alamos National Laboratory (LANL), Los Alamos, NM 87545, USA. roberth@lanl.gov.
⁴ Centro Nacional de Microscopía Electrónica (CNME), Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Avda. Complutense s/n, 28040 Madrid, Spain. esteban.urones@pdi.ucm.es.
⁵ Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan. sptsai@ntu.edu.tw.
⁶ Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan. jryang@ntu.edu.tw.
⁷ Materalia Research Group, National Center for Metallurgical Research (CENIM-CSIC), 28040 Madrid, Spain. ccm@cenim.csic.es.

Abstract

The goal of this paper is to analyse the effect of adding Al on the non-steady pearlite growth occurring in a Fe-C-Mn system. The results are discussed in terms of the partitioning of elements across the austenite/ferrite and austenite/cementite interfaces, and the modification of the pearlite driving force related to the change in carbon activity in austenite.

Keywords: divergence; non-steady state; partitioning; pearlite; thermodynamics.