In-situ research of high-temperature behavior of primary carbide in H13 steel

MAO Ming-tao; GUO Han-jie; SUN Xiao-lin; WANG Fei; CHEN Xi-chun; GUO Jing

doi:10.13374/j.issn2095-9389.2017.08.006

Volume 39 Issue 8

Aug. 2017

Turn off MathJax

Article Contents

Article Navigation > Chinese Journal of Engineering > 2017 > 39(8): 1174-1181

MAO Ming-tao, GUO Han-jie, SUN Xiao-lin, WANG Fei, CHEN Xi-chun, GUO Jing. In-situ research of high-temperature behavior of primary carbide in H13 steel[J]. Chinese Journal of Engineering, 2017, 39(8): 1174-1181. doi: 10.13374/j.issn2095-9389.2017.08.006

Citation:

MAO Ming-tao, GUO Han-jie, SUN Xiao-lin, WANG Fei, CHEN Xi-chun, GUO Jing. In-situ research of high-temperature behavior of primary carbide in H13 steel[J]. Chinese Journal of Engineering, 2017, 39(8): 1174-1181. doi: 10.13374/j.issn2095-9389.2017.08.006

Citation:

PDF( 18590 KB)

In-situ research of high-temperature behavior of primary carbide in H13 steel

doi: 10.13374/j.issn2095-9389.2017.08.006

1) School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2) Key Laboratory of Beijing for Special Melting and Preparation of High-End Metal Materials, Beijing 100083, China
3) Central Iron & Steel Research Institute, Beijing 100081, China

Received Date: 2017-01-06

Abstract

Abstract

In-situ research was conducted to illuminate the high-temperature behavior of primary carbide in H13 steel that had been cast in different ways. Experimental observations indicate the obvious segregation of Cr, Mo, V, and C in the interdendrite zone of continuously cast and electroslag remelting (ESR) samples. In the interdendrite zone, primary carbide is composed of Cr, Mo, V, and Ti. A liquid phase was observed to occur around the primary carbide of two as-cast samples cast by continuous casting and ESR processes when heated to 1200℃ and 1250℃, respectively. The temperature at which the liquid phase appears agrees well with theoretical calculations. The liquid-phase region expands as the heating temperature increases and the continuous casting sample shows a larger liquid zone. The emergence of a partial liquid phase accelerates the diffusion of the segregated elements and is an important factor in the high-temperature behavior of primary carbide.
- primary carbide,
- microsegregation,
- in-situ observation,
- partial liquid phase

FullText(HTML)

References(9)

References

[1]	Ueshima Y, Mizoguchi S, Matsumiya T, et al. Analysis of solute distribution in dendrites of carbon steel with δ/γ transformation during solidification. Metall Trans B, 1986, 17(4):845
[2]	Matsumiya T, Kajioka H, Mizoguchi S, et al. Mathematical analysis of segregations in continuously-cast slabs. Trans Iron Steel Inst Jpn, 1984, 24(11):873
[6]	Maity S K, Ballal N B, Kawalla R. Development of ultra-high strength steel by electroslag refining:effect of inoculation of titanium on the microstructures and mechanical properties. ISIJ Int, 2006, 46(9):1361
[8]	Corwyn B M, Finn J. The effect of annealed microstructure on the impact toughness of premium H-13 die steel//NADCA 18th International Die Casting Congress and Exposition. Pennsylvania, 1995:357
[9]	Torkar M, Vodopivec F, Petovar S. Analysis of segregations in as-cast X40CrMoV51 steel. Mater Sci Eng A, 1993, 173(1-2):313
[11]	Liu X G, Meng D N, Wang Y H, et al. Influences of high-temperature diffusion on the homogenization and high-temperature fracture behavior of 30Cr1Mo1V. J Mater Eng Perform, 2015, 24(2):1079
[12]	Bjärbo A, Hättestrand M. Complex carbide growth, dissolution, and coarsening in a modified 12 pct chromium steel——an experimental and theoretical study. Metall Mater Trans A, 2001, 32(1):19
[13]	Meng Y, Thomas B G. Heat-transfer and solidification model of continuous slab casting:CON1D. Metall Mater Trans B, 2003, 34(5):685
[14]	Saunders N, Guo U K Z, Li X, et al. Using JMatPro to model materials properties and behavior. JOM, 2003, 55(12):60