Effect of quenching and tempering temperature on the tensile properties of low alloyed boron steel

Gürkan Aydın; Aysel Yazıcı

doi:10.3139/120.111461

Article

Effect of quenching and tempering temperature on the tensile properties of low alloyed boron steel

Gürkan Aydın and Aysel Yazıcı

Published/Copyright: January 27, 2020

Published by

Become an author with De Gruyter Brill

Submit Manuscript Author Information

From the journal Materials Testing Volume 62 Issue 2

Abstract

The effect of quenching and tempering temperature on the tensile properties and the yield strength ratio of 30MnB5, 27MnCrB5, and 34MnB5 boron steel have been investigated. Quenching (Q) and tempering (T) temperatures varied in the range of 850 to 950 °C and 150 to 450 °C, respectively. The mechanical properties of quenched and tempered steel were examined with the application of the tensile test and hardness testing. The microstructure was characterized using optical microscopy and X-ray diffraction. The increase in Q & T temperatures resulted in a decrease in the ultimate tensile strength (UTS), yield strength (YS) and break strength (BS) values and an increase in the yield strength ratio. The tempering temperature was found to be more effective on the UTS, YS and BS values than was the austenitizing temperature. It was noted that the effect of tempering temperature is greater on the ultimate tensile than on the yield strength for the investigated low alloyed boron steel. The effect of the tempering temperature on the elongation to fracture is also greater than the effect on the uniform elongation. The yield strength ratio showed a tendency to increase with increasing tempering temperatures. It was raised considerably by increasing the tempering temperatures from 300 to 450 °C, while it remained at a similar level between 150 and 300 °C. The ratio of ultimate tensile strength and mean hardness decreased with increasing tempering temperatures for the tested varieties of steel. Increasing tempering temperature leads to an increase in yield strength ratio and a total elongation and a decrease in the strength of the tempered martensite.

* Correspondence Address, Associate Professor Dr. Aysel Yazıcı, Department of Machine and Metal Technologies, Turgutlu Vocational School, Manisa Celal Bayar University, 45400 Turgutlu-Manisa, Turkey, E-mail: aysel.yazici@cbu.edu.tr

Dr. Aysel Yazıcı, born in 1967, received her BSc, MSc and PhD degrees from the Agricultural Machinery Department of Ege University, Izmir, Turkey in 1987, 1992 and 1997, respectively. She worked for the Ministry of Agriculture and Rural Affairs as an agricultural engineer from 1990 to 2001. Currently, she is working as Associate Professor at Manisa Celal Bayar University, Turgutlu Vocational School, Manisa, Turkey in the field of heat treatments, the mechanical behavior of materials and tribology.

Gürkan Aydın, born in 1989, received his BSc degree from the Department of Mechanical Engineering of Karadeniz Technical University, Trabzon, Turkey in 2014. He received his MSc from the Department of Mechanical Engineering, University of Manisa Celal Bayar, Manisa, Turkey in 2019.

References

1 W. C. Leslie : The Physical Metallurgy of Steels, McGraw-Hill College, Tokyo, Japan (1981)Search in Google Scholar

2 T. Taylor , G.Fourlaris, A.Clough: Effect of carbon and microalloy additions on hot stamped boron steel, Materials Science and Technology33 (2017) No. 16, pp. 1964–197710.1080/02670836.2017.1342018.Search in Google Scholar

3 American Society for Metals: Boron Steel, 2^nd Ed., American Society for Metals, Materials Park, Ohio, USA (1953)Search in Google Scholar

4 S. N. Ghali , H. S.El-Faramawy, M. M.Eissa: Influence of boron additions on mechanical properties of carbon steel, Journal of Minerals and Materials Characterization and Engineering11 (2012), pp. 995–99910.4236/jmmce.2012.1110101.Search in Google Scholar

5 A. Yazıcı , U.Çavdar: A study of soil tillage tools from boronized sintered iron, Metal Science and Heat Treatment58 (2017), No. 11–12, pp. 753–75710.1007/s11041-017-0091-3.Search in Google Scholar

6 A. Yazıcı , M. S.Zeybek, H.Güler, A. M.Pınar, R.Tücer: Corrosion resistance and mechanical properties of quenched and tempered 28MnCrB5 steel in two acidic environments, Materials Testing59 (2017), No. 3, pp. 221–22510.3139/120.110986.Search in Google Scholar

7 X. Fang , Z.Fan, B.Ralph, P.Evans, R.Underhill: Effects of tempering temperature on tensile and hole expansion properties of a C–Mn steel, Journal of Materials Processing Technology132 (2003), No. 1, pp. 215–21810.1016/S0924-0136(02)00923-8.Search in Google Scholar

8 H. Güler , R.Ertan, R.Özcan: Influence of heat treatment parameters on the microstructure and mechanical properties of boron-alloyed steels, Materials Testing54 (2012), pp. 619–62410.3139/120.110373.Search in Google Scholar

9 M. W. Tong , P. K. C.Venkatsurya, W. H.Zhou, R. D. K.Misra, B.Guo, K. G.Zhang, W.Fan: Structure–mechanical property relationship in a high strength microalloyed steel with low yield ratio: The effect of tempering temperature, Materials Science and Engineering A609 (2014), pp. 209–21610.1016/j.msea.2014.05.004.Search in Google Scholar

10 H. Güler , R.Ertan, R.Özcan: Effect of heat treatment on the microstructure and mechanical properties of 30MnB5 boron steel, Materiali in Tehnologije48 (2014), No. 6, pp. 971–976Search in Google Scholar

11 E. Abbasia , Q.Luoa, DOwens: A comparison of microstructure and mechanical properties of low-alloymedium-carbon steels after quench-hardening, Materials Science and Engineering A725 (2018), pp. 65–7510.1016/j.msea.2018.04.012.Search in Google Scholar

12 H. P. Hougardy , Werkstoffkunde Stahl, Band 1: Grundlagen, Springer/Verlag Stahleisen, Düsseldorf (1984)Search in Google Scholar

13 TS EN ISO 6892-1: Metallic Materials – Tensile Testing – Part 1: Method of Test at Room Temperature, ISO, Geneva, Switzerland (2011)Search in Google Scholar

14 ASTM E92-17: Standard Test Methods for Vickers Hardness and Knoop Hardness of Metallic Materials, ASTM International, West Conshohocken, USA (2017) 10.1520/E0092-17.Search in Google Scholar

15 ASTM E 975-13, Standard Practice for X-Ray Determination of Retained Austenite in Steel with Near Random Crystallographic Orientation, ASTM International, West Conshohocken, USA (2013), 10.1520/E0975-13.Search in Google Scholar

16 H. M. Rietveld : A profile refinement method for nuclear and magnetic structures, Journal of Applied Crystallography2 (1969), pp. 65–7110.1107/S0021889869006558.Search in Google Scholar

17 J. Yang , F.Huang, Z.Guo, Y.Rong, N.Chen: Effect of retained austenite on the hydrogen embrittlement of a medium carbon quenching and partitioning steel with refined microstructure, Materials Science and Engineering A665 (2016), pp. 76–8510.1016/j.msea.2016.04.025.Search in Google Scholar

18 R. W. K. Honeycombe , H. K. D. H.Bhadeshia: Steels Microstructure and Properties, Edward Arnold, London, UK (1995)Search in Google Scholar

19 L. Cheng , C. M.Brakman, B. M.Korevaar, E. J.Mittemeijer: The tempering of iron-carbon martensite; dilatometric and calorimetric analysis, Metallurgical Transactions A19 (1988), pp. 2415–242610.1007/BF02645469.Search in Google Scholar

20 M. Sarikaya , A. K.Jhingan, G.Thomas: Retained austenite and tempered martensite embdttlement in medium carbon steels, Metallurgical Transactions A14 (1983), No. 6, pp. 1121–113310.1007/BF02670450.Search in Google Scholar

21 Structural integrity assessment procedures for European industry, Contribution To BE95-1426 Task 2 Sub-Task 2.3 19/2/99, http://docplayer.net/23884565-Structural-integrity-assessment-procedures-for-european-industry-sintap-sub-task-2-3-yield-stress-tensile-stress-ratio.html (accessed 20 August 2019)Search in Google Scholar

Published Online: 2020-01-27

Published in Print: 2020-02-03

You are currently not able to access this content.

Articles in the same Issue

https://doi.org/10.3139/120.111461