Simulation of Mn2-x Fe1+x Al Intermetallic Alloys Microstructural Formation and Stress-Strain Development in Steel Casting

Introduction

The microstructure of Mn₂FeAl-shaped memory composites is closely related to their Fe to Mn ratio of the crystal structures of FeAl and Mn₂FeAl intermetallic composites are thought to be useful for high temperature structural materials (Hiroki, Yamamoto, Takeda, Suzuki, & Sakuma, 2010; Otsuka, 1998; Otsuka & Ren, 2005). These intermediate structures exhibit good corrosion and antioxidant resistance, good mechanical properties at low density and high temperature. However, the use of room-temperature brittleness, low immunity at high temperatures, and excessive cramping limits the use. Recently, several efforts have been devoted to improving the room-temperature characterization of intermediate systems (Cook, O'keefe, Smith, & Stobbs, 1983; Lin, Wu, Chou, & Kao, 1991; Piao, Miyazaki, & Otsuka, 1992; Piao, Otsuka, Miyazaki, & Horikawa, 1993; Scarsbrook, Cook, & Stobbs, 1984). Two important roads have been used to improve the room-temperature dilution: mixing with transition metals and modification of the stoichiometric relationship (Liancheng & Wei, 1997). A partial disorder of the naturally derived super-lattice lies in the transformation of the stoichiometric relation. It has also shown the addition of a third element to reduce the strong atomic order of intermediate alloys. We have carried some investigations out with conventional alloy casting methods with unmodified metal additives. Some researchers investigated that (Zhang, Zhao, Duerig, & Wayman, 1990) that Li AlCuFe and Mn₂FeAl improve environmental weakness in intermetallic alloys. Li additives enhance the compressibility of Mn₂FeAl and NiFeAl₃ alloys in intermetallic systems (Liu & Galvin, 1997). In the Mn_1.5Fe_1.5Al alloy microstructure, many Mn₂FeAl matrix alloys and β-Fe occur. They have documented that Mn1.5Fe1.5Al can perform extensive hysteresis, for example, at 150oC, on decomposition in a manganese-rich Heusler alloy state or stress-induced manganese-rich Heusler alloy state (Zhang et al., 1990).

In this work, we investigated the effect of tensile water by adding different concentrations of Fe in Mn₂FeAl intermetallic matrices by phase transformation kinetics, DDT and CCD graphs. We observed that temperature-dependent thermodynamic properties could be formed in these materials such as density, Young's modulus, thermal expansion coefficient and thermal conductivity. Temperature with mechanical properties replaced the Heusler Alloys phase. In the present paper, it reports the new development computer programming simulation which can calculate the above material properties for general Heusler alloy. I base the result of the program on stress and a strain of Mn2FeAl major phase transformations taking place during heat treatment, along with the calculation of the properties of different phases designed in this material. This paper focused on preparing Al-based Heusler alloy through JMatPro software package, which is generating material data that has to be matched with experimental results, such as dilatometry, Jominy hardenability tests, and reliable testing. To make JMatPro’s material data is easier to analyses with the developed model by arranged systematically in the format of FE simulation packages. We have successfully developed Heusler alloy with different Fe composition with formation/deformation simulation.