Abstract
The control of inclusions in steel components is essential to guarantee strong performance. The reliable characterization of inclusion populations is essential not only to evaluate the quality of the components but also to allow the use of analytical procedures for the comparison and discrimination of inclusion populations. In this work, inclusion size distributions in wire rod specimens from six plant-scale heats were measured and analyzed. For the measurements, the metallographic procedure specified in the ASTM E2283 standard was used. The population density function (PDF) approach and the extreme value statistical procedure specified in the ASTM E2283 standard were used to analyze the whole size distribution and the upper tail of the size distribution, respectively. The PDF approach allowed us to identify differences among inclusion size distributions and showed that new inclusions were not formed after the liquid steel treatment process. The extreme value statistical procedure led to the prediction of the maximum inclusion length for each heat, which was used for the statistical discrimination of heats. Furthermore, the estimation of the probability of finding an inclusion larger than a given inclusion size using the extreme value theory allowed us to order the heats for different critical inclusion sizes.
Funder
the National Council of Science and Technology of Mexico
Subject
General Materials Science
Reference18 articles.
1. State of the Art in Control of Inclusions, Their Characterization, and Future Requirements;Kaushik;Met. Mater. Trans. A,2012
2. Pretorius, E.B., Oltmann, H.G., and Schart, B.T. An Overview of Steel Cleanliness from an Industry Perspective. AISTech Proceedings 2013, 2013.
3. Measurement of crystal size distributions;Higgins;Am. Miner.,2000
4. Characterization of Inclusions in Clean Steels: A Review Including the Statistics of Extremes Methods;Atkinson;Prog. Mater. Sci.,2003
5. Evolution of Non-Metallic Inclusions in Secondary Steelmaking: Learning from Inclusion Size Distributions;Van Ende;ISIJ Int.,2013
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献