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Effect of Cr to Fe on the solid solubility, lattice parameter and strain fabrication of Fe80Cr20 alloy powder

Feriyanto, Dafit and Idris, Maizlinda Izwana and Sebayang, Darwin (2014) Effect of Cr to Fe on the solid solubility, lattice parameter and strain fabrication of Fe80Cr20 alloy powder. In: International Conference on X-Ray & Related Technique in Research and Industry (ICXRI2014), 11-13 August 2014 , Johor Bahru, Johor.


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This paper focuses on the effect of the new method on the crystallite size and thermal stability of FegoCr2a~li oy powder. Generally, the ball milling sample and ultrasonic technique sample have dissatisfaction result when applied at high temperature. In addition, the combination both of those techniques not yet carried out. The new method of mechanical alloying and ultrasonic technique were applied in order to reduce the crystallite size. The new method is called as combination treatment. This condition allows the enhancement of thermal stability of Fe80Cr20 alloy powder. In this study, mechanical alloying process was carried out with milling time of 60 hours. Then, the ultrasonic technique was performed at frequency of 35 kHz at 3, 3.5, 4, 4.5, and 5 hours. From XRD analysis, it was found that the broader peaks indicated the smaller crystallite size. It shows that the combination treatment (milled and UT) reduce the crystallite size up to 2.171 nm when mechanically alloyed for 60 hours (milled 60 h) and followed by ultrasonic treatment for 4.5 hours (UT 4.5 h). Smallest crystallite size enhance the thermal stability up to 12.7 mg which shown by TGA analysis during 1100 'C temperature operation. The combination treatment is method which is effective to fabricate Fe80Cr20 alloy powder.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: crystallite size; thermal stability; mechanical alloying; ultrasonic technique and interconnect
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Materials Engineering and Design
Depositing User: Normajihan Abd. Rahman
Date Deposited: 09 Nov 2014 07:48
Last Modified: 09 Nov 2014 07:48
URI: http://eprints.uthm.edu.my/id/eprint/5882
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