A General Steel Hardenability Calculation Method

Abstract:

This paper presents a general calculation method of steel hardenability. First use non-linear fitting method to establish a general relationship between hardenability coefficient and end-quench distance, and then use SVM method to establish the relationship between alloying elements and hardenability coefficients. It solves the limited applicability and poor precisions problems of the currently applied calculation methods for hardenability. It gives an enhancement scheme to make sure the accuracy of the model when the data are not complete enough. Experimental data show that using this method can effectively improve the hardenability prediction accuracy and can be widely used.

• Periodical: Advanced Materials Research (Volumes 816-817)
• Pages: 140-143
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.816-817.140
• Online since: September 2013
• Authors: Zhi Gang Yu, Li Na Wang, Jia Liu
• Keywords: General Fitting Method, Hardenability Calculation, SVM Application

References

[1] Bohai Yu: Calculation of hardenability and mechanical properties of non-linear equations, Iron and Steel Vol. 20(1985), p.40.

[2] Bohai Yu: Computer design of steel and smelting trimming, Special Steel Vol. 18(1997).

[3] Man Jin: A new mathematical model describing hardenability of steels. Journal of Metals Vol. 3(2006), p.265.

[4] Man Jin: New method for predicting the jominy curve of structural steels. Metals Journal, Vol. 4(2006), p.405.

[5] AMS Handbook Committee: Metals Handbook, 9th ed. edited by American Society for Metals (1978).

[6] Daizhi Fu, Huiguo Lin: Handbook of hardenability of steel, edited by China machine press, Beijing (1973), in press.