Year 2014, Volume 38 , Issue 2, Pages 231 - 239 2014-02-01

Experimental investigation into the EDM process of $\gamma $-TiAl
Experimental investigation into the EDM process of $\gamma $-TiAl

MOHAMMAD REZA SHABGARD [1] , HOSSEIN FARAGI [2] , BEHNAM KHOSROZADEH [3] , KEIVAN AMINI [4] , MIRSADEGH SEYEDZAVVAR [5]


Among the advanced materials, the $\gamma $-TiAl intermetallic compounds, due to their unique properties, are being gradually employed instead of nickel base super alloys, titanium alloys, and other high temperature alloys in the aerospace and automotive industries. These properties include maintaining high strength and creep resistance at elevated temperatures. Considering the features of this material and the limitations of traditional machining procedures, in this paper the results of utilizing the EDM process for $\gamma $-TiAl and the effects of input parameters, including discharge current and discharge duration, on output characteristics, comprising material removal rate, tool wear ratio, surface texture, and compositions and phases of machined surfaces, are presented. The results show that the EDM process affects surface integrity of $\gamma $-TiAl and causes the formation of surface cracks even at the lowest level of discharged energy. The increase in the discharge energy results in the formation of longer cracks with wider mouths. Due to the ingress of carbon and oxygen on the surface of the specimen, initial compositions and phases of machined surfaces are changed and brittle phases such as Ti$_{3}$Al and TiC are formed on the machined surfaces.
Among the advanced materials, the $\gamma $-TiAl intermetallic compounds, due to their unique properties, are being gradually employed instead of nickel base super alloys, titanium alloys, and other high temperature alloys in the aerospace and automotive industries. These properties include maintaining high strength and creep resistance at elevated temperatures. Considering the features of this material and the limitations of traditional machining procedures, in this paper the results of utilizing the EDM process for $\gamma $-TiAl and the effects of input parameters, including discharge current and discharge duration, on output characteristics, comprising material removal rate, tool wear ratio, surface texture, and compositions and phases of machined surfaces, are presented. The results show that the EDM process affects surface integrity of $\gamma $-TiAl and causes the formation of surface cracks even at the lowest level of discharged energy. The increase in the discharge energy results in the formation of longer cracks with wider mouths. Due to the ingress of carbon and oxygen on the surface of the specimen, initial compositions and phases of machined surfaces are changed and brittle phases such as Ti$_{3}$Al and TiC are formed on the machined surfaces.
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Primary Language tr
Journal Section Articles
Authors

Author: MOHAMMAD REZA SHABGARD

Author: HOSSEIN FARAGI

Author: BEHNAM KHOSROZADEH

Author: KEIVAN AMINI

Author: MIRSADEGH SEYEDZAVVAR

Dates

Publication Date : February 1, 2014

Bibtex @ { tbtkengineering145612, journal = {Turkish Journal of Engineering and Environmental Sciences}, issn = {1300-0160}, eissn = {1303-6157}, address = {}, publisher = {TUBITAK}, year = {2014}, volume = {38}, pages = {231 - 239}, doi = {10.3906/muh-1404-15}, title = {Experimental investigation into the EDM process of \$\\gamma \$-TiAl}, key = {cite}, author = {SHABGARD, MOHAMMAD REZA and FARAGI, HOSSEIN and KHOSROZADEH, BEHNAM and AMINI, KEIVAN and SEYEDZAVVAR, MIRSADEGH} }
APA SHABGARD, M , FARAGI, H , KHOSROZADEH, B , AMINI, K , SEYEDZAVVAR, M . (2014). Experimental investigation into the EDM process of $\gamma $-TiAl. Turkish Journal of Engineering and Environmental Sciences , 38 (2) , 231-239 . DOI: 10.3906/muh-1404-15
MLA SHABGARD, M , FARAGI, H , KHOSROZADEH, B , AMINI, K , SEYEDZAVVAR, M . "Experimental investigation into the EDM process of $\gamma $-TiAl". Turkish Journal of Engineering and Environmental Sciences 38 (2014 ): 231-239 <https://dergipark.org.tr/en/pub/tbtkengineering/issue/12203/145612>
Chicago SHABGARD, M , FARAGI, H , KHOSROZADEH, B , AMINI, K , SEYEDZAVVAR, M . "Experimental investigation into the EDM process of $\gamma $-TiAl". Turkish Journal of Engineering and Environmental Sciences 38 (2014 ): 231-239
RIS TY - JOUR T1 - Experimental investigation into the EDM process of $\gamma $-TiAl AU - MOHAMMAD REZA SHABGARD , HOSSEIN FARAGI , BEHNAM KHOSROZADEH , KEIVAN AMINI , MIRSADEGH SEYEDZAVVAR Y1 - 2014 PY - 2014 N1 - doi: 10.3906/muh-1404-15 DO - 10.3906/muh-1404-15 T2 - Turkish Journal of Engineering and Environmental Sciences JF - Journal JO - JOR SP - 231 EP - 239 VL - 38 IS - 2 SN - 1300-0160-1303-6157 M3 - doi: 10.3906/muh-1404-15 UR - https://doi.org/10.3906/muh-1404-15 Y2 - 2020 ER -
EndNote %0 Turkish Journal of Engineering and Environmental Sciences Experimental investigation into the EDM process of $\gamma $-TiAl %A MOHAMMAD REZA SHABGARD , HOSSEIN FARAGI , BEHNAM KHOSROZADEH , KEIVAN AMINI , MIRSADEGH SEYEDZAVVAR %T Experimental investigation into the EDM process of $\gamma $-TiAl %D 2014 %J Turkish Journal of Engineering and Environmental Sciences %P 1300-0160-1303-6157 %V 38 %N 2 %R doi: 10.3906/muh-1404-15 %U 10.3906/muh-1404-15
ISNAD SHABGARD, MOHAMMAD REZA , FARAGI, HOSSEIN , KHOSROZADEH, BEHNAM , AMINI, KEIVAN , SEYEDZAVVAR, MIRSADEGH . "Experimental investigation into the EDM process of $\gamma $-TiAl". Turkish Journal of Engineering and Environmental Sciences 38 / 2 (February 2014): 231-239 . https://doi.org/10.3906/muh-1404-15
AMA SHABGARD M , FARAGI H , KHOSROZADEH B , AMINI K , SEYEDZAVVAR M . Experimental investigation into the EDM process of $\gamma $-TiAl. Turkish Journal of Engineering and Environmental Sciences. 2014; 38(2): 231-239.
Vancouver SHABGARD M , FARAGI H , KHOSROZADEH B , AMINI K , SEYEDZAVVAR M . Experimental investigation into the EDM process of $\gamma $-TiAl. Turkish Journal of Engineering and Environmental Sciences. 2014; 38(2): 239-231.

Authors of the Article
MOHAMMAD REZA SHABGARD [1]
HOSSEIN FARAGI [2]
BEHNAM KHOSROZADEH [3]
KEIVAN AMINI [4]
MIRSADEGH SEYEDZAVVAR [5]