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| Effect of indentation spacing on measured value of Vickers hardness |
| ZHOU Siyu, CAI Jing, ZHANG Zhongyuan, ZHANG Hongyang, WANG Jian, ZHANG Jian |
| Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China |
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Abstract Vickers hardness test is the most accurate test method in static hardness test. However, in the actual operation of Vickers hardness test, it will be interfered by many factors, thus affecting the experimental results. Several groups of parallel tests for Vickers hardness test on multiple standard plates were conducted using automatic Vickers hardness test equipment. The influence of indentation spacing on the measurement results was analyzed. The uncertainty of tested results was calculated according to GB/T 4340.1-2009. It was found that the larger the indentation spacing was, the smaller the uncertainty was, and more accurate the test result was. Some testing materials were selected to verify the above conclusions. At present, there was a lack of research on the influence of indentation spacing on hardness value.
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Received: 05 May 2022
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2023, Vol. 41 
