Ghosh, Sabita and Sahay, S K and Das, Goutam (2004) Effectiveness of ball indentation technique for evaluating mechanical properties of micro alloyed steel. Journal of Metallurgy and materials Science, 46 (2). pp. 95-105.
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Ball indentation technique (BIT) has been employed to evaluate a few mechanical properties (YS, UTS, n, K and hardness) of four micro alloyed steels at room temperature. The design of the set-up for BI experimentation in the laboratory scale has been established. To perform and control the test, software on BASIC has been developed. This software also helps to store the load-depth data obtained through a linear variable differential transducer (LVDT). Software on FORTRAN has been developed to analyse the BI results. Different experimental parameters such as indenter speed, diameter of the indenter. minimum size of the specimen required and the BI test procedure have been optimised. The present work is performed on different category of micro alloyed steels for making an attempt to evaluate mechanical properties from small amount of (5X5X2 mmPItest specimen. One welded micro alloyed steel has also been considered for the present investigation for finding out point to point variation of mechanical properties. The grain sizes of the four micro alloyed steels are also determined for calculating the strain hardening exponent (n) values. The mechanical properties of the alloys are determined through conventional mechanical test and they were compared with BI obtained test results. The BI test results show a good agreement with those from conventional standard test method.
|Uncontrolled Keywords:||Ball indentation test; Non-destructive test; Small specimen test; Mechanical properties; Micro-alloyed steel; Grain size|
|Divisions:||Material Science and Technology|
|Deposited By:||Dr. A K Sahu|
|Deposited On:||04 Aug 2010 11:57|
|Last Modified:||08 Jan 2018 15:07|
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