High Temperature Performance of a Mo-W Type Hot Work Die Steel of High Thermal Conductivity

doi:10.11901/1005.3093.2016.037

Chinese Journal of Materials Research

2017, Vol. 31

Issue (1): 32-40 DOI: 10.11901/1005.3093.2016.037

Orginal Article

Current Issue | Archive | Adv Search

High Temperature Performance of a Mo-W Type Hot Work Die Steel of High Thermal Conductivity

Shuang LI^1,^2,³,Xiaochun WU^1,^2,³(

),Xinxin LI^1,^2,³,Xijuan HE^1,^2,³

1 State Key Laboratory of Advanced Special Steel,Shanghai University,Shanghai 200072,China
2 Shanghai Key Laboratory of Advanced Ferrometallurgy,Shanghai University,Shanghai 200072,China
3 School of Materials Science and Engineering,Shanghai University,Shanghai 200072,China

Cite this article:

Shuang LI,Xiaochun WU,Xinxin LI,Xijuan HE. High Temperature Performance of a Mo-W Type Hot Work Die Steel of High Thermal Conductivity. Chinese Journal of Materials Research, 2017, 31(1): 32-40.

Download:

HTML

PDF(7136KB)
Export: BibTeX | EndNote (RIS)

Abstract

The temper resistance,thermal stability,high temperature thermal conductivity and thermal fatigue were investigated for a new Mo-W type hot work die steel SDCM-S. The results show that in comparison with the convensional H13 steel,the SDCM-S exhibits better temper resistance and thermal stability with a hardnessabove 38HRC after holding at 620℃ for 20 h,which higher than H13 by 8HRC,wihle its second hardening temperature appeared at 580℃ which higher than H13 by approximately 60℃. The high temper resistance and thermal resistance of SDCM-S may be ascribed to the well stability of the precipitates of Mo₂C carbide during tempering. The thermal conductivity of SDCM-S is 1.86 times and 1.26 times higher than those of H13 at 100℃ and 700℃,respectively,which may be due to the low content of Si,Mn and Cr,as well as the high content of Mo of SDCM-S. The SDCM-S has better thermal fatigue resistance than H13 steel,i.e. the former one has a damage parameter of thermal fatigue of ca.76.1% of that of the later. In conclusion,SDCM-S has better performance in high temperature temper resistance,thermal stability,and thermal conductivity,which reasonably result in better thermal fatigue resistance of the steel SDCM-S.

Key words: metallic materials hot work die steel second hardening thermal conductivity temper resistance thermal stability thermal fatigue

Received: 06 January 2016

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	（）
	Articles by authors
	Shuang LI
	Xiaochun WU
	Xinxin LI
	Xijuan HE

URL:

https://www.cjmr.org/EN/10.11901/1005.3093.2016.037 OR https://www.cjmr.org/EN/Y2017/V31/I1/32

Table 1 Chemical composition of SDCM-S and H13 steel(%, mass fraction)

Fig.1 Schematic diagram of experimental apparatus and the size and geometry of a thermal fatigue specimen (mm)

Fig.2 Hardness dependent on temperature curve of two kinds of die steels

Fig.3 SEM microstructure of quenched (a) and tempered (b) SDCM-S steel

Fig.4 TEM micrographs of bright field image (a)and dark field image and diffraction patterns (b) of Mo₂C carbides

Fig.5 TEM micrographs of bright field imageand diffraction patternsof M6C carbides

Fig.6 Hardness dependent on time curve of the two diesteels after 20 h of tempering at 620℃

Fig.7 SEM micrographs of the tempered microstructure of SDCM-S steel at 620℃ for 10h (a), 20 h (b) and H13 steel for10 h(c), 20h (d)

Fig.8 TEM micrograph of SDCM-S steel after tempered at 620℃ for 20 h

Fig.9 Temperature-dependent thermal properties of SDCM-Sand H13 die steels (a) special heat capacity, (b) thermal diffusivity coefficient and (c) thermal conductivity

Fig.10 Crack micrograph of SDCM-S steel after 1000 (a), 2000 (b), 3000 times (c) and H13 stee l1000 (d), 2000 (e), 3000 times (f)

Fig.11 Calculation results of thermal fatigue damage factor

Fig.12 Micro-hardness distribution away from the surface of two steels after 3000 cycles

[1]	Cui K.Present condition and developing direction of die steels in china[J]. Materials for Mechanical Engineering, 2001, 25(1): 3
[1]	(崔崑. 中国模具钢现状及发展[J]. 机械工程材料, 2001, 25(1): 3)
[2]	Wu X C, ZUO P P, Development status and trend of hot working die steels at home and abroad[J]. Die & mould Industry, 2013, 39(10): 8
[2]	(吴晓春, 左鹏鹏,国内外热作模具钢发展现状与趋势[J]. 模具工业, 2013, 39(10): 8)
[3]	Fuchs K.Hot-work tool steels with improved properties for die-casting applications [A]. In 6th International Tooling Conference[C]. Karlstad University, 2002
[4]	Kaschnitz E, Hofer P, Funk W.Thermophysical Properties of a Hot-Work Tool-Steel with High Thermal Conductivity[J]. Int. J. Thermophys. 2013, 34(1): 843
[5]	Terada Y, Ohkubo K, Mohri T, Suzuki T.Effects of alloying additions on thermal conductivity of ferritic iron[J]. ISIJ international, 2002, 42(3): 322
[6]	Xu W L, Li S, Yin X W.Studies on martensitic aging strengthening high thermal conductivity hot stamping die steel SKD1[J]. Chinese Journal of Materials Reaserch, 2013, 27(5): 532
[6]	(徐伟力, 李爽, 尹学炜. 马氏体时效强化高热导率热冲压模具钢 SDK1 钢的性能[J]. 材料研究学报, 2013, 27(5): 532)
[7]	Su T J, Wang F C, Li S K.Regression relationship established for thermal conductivity of steel as function of chemical composition at various temperatures. Ordnance Marerial Scienceand Engineering, 2004, 27(5): 14
[7]	(苏铁健, 王福耻, 李树奎. 钢的热导率与化学成分和温度的关系[J]. 兵器材料科学与工程, 2004, 27(5): 14)
[8]	Peet M J, Hasan H S, Bhadeshia H K D H, Prediction of thermal conductivity of steel[J]. Int J Heat Mass Transf, 2011, 54(1): 2607
[9]	Zhu C Y, Shi N N, Zuo P P.Effect of Mn and W on thermal stability of 4Cr2Mo2W2V die steel[J]. Transactions of Materials and Heat Treatment, 2014, 35(2): 66
[9]	(朱春燕, 石楠楠, 左鹏鹏. Mn 和 W 元素对 4Cr2Mo2W2V 模具钢热稳定性的影响[J].材料热处理学报, 2014, 35(2): 66)
[10]	Min N, Shi N N, Shen Y L.Internal friction investigation on thermal-stability of martensitic hot work steel[J]., Transactions of Materials and Heat Treatment, 2012, 33(2): 96
[10]	(闵娜, 石楠楠, 沈赟靓. 马氏体热作模具钢热稳定性的内耗研究[J].材料热处理学报, 2012, 33(2): 96)
[11]	Klob?ar D, Kosec L, Kosec B.Thermo fatigue cracking of die casting dies[J]. Eng. Fai. Anal. 2012, 20(1): 43
[12]	Mellouli D, Haddar N, K?ster A.Thermal fatigue failure of brass die-casting dies[J]. Eng. Fai. Anal, 2012, 20(1): 137
[13]	Klob?ar D, Tu?ek J, Taljat B.Thermal fatigue of materials for die-casting tooling[J]. Mat, Sci, Eng, A, 2008, 472(1): 198
[14]	Klob?ar D, Tu?ek J.Thermal stresses in aluminium alloy die casting dies[J]. Com, Mat, Sci, 2008, 43(1): 1147
[15]	Berns H, Strength and toughness of hot working tool steels[J]. Tool Materials for Molds and Dies, Application and Performance, 1987, 45(1): 326
[16]	SHEN Z, Li C, Su C H.Thermal diffusivity, thermal conductivity, and specific heat capacity measurements of molten tellurium[J]. J, Cry, Gro, 2003, 250(1): 272
[17]	Min Y A.Study on the surface treatment process of H13 type hot work steel and its subsequent thernal fatigue and erosion behaviors [D]. Shanghai: Shanghai University, 2005
[17]	(闵永安. 热作模具钢H13型表面处理及其热疲劳热熔损性能研究 [D]. 上海: 上海大学, 2005)
[18]	Wu X C, Xu L P.Computer-aided eveluation for hot fatigue crack of modle steel[J]. Shanghai Steel, 2001, 23(6): 3
[18]	(吴晓春,许珞萍. 模具钢热疲劳裂纹的计算机辅助评定[J]. 上海金属, 2001, 23(6): 3)
[19]	Xie H J, Wu X C.Computer evaluation for the degree of thermal fatigue damage of hot working die steel[J]. Shanghai Steel, 2008, 30(3): 1
[19]	(谢豪杰, 吴晓春. 热作模具钢热疲劳损伤程度的计算机评定[J]. 上海金属, 2008, 30(3): 1)
[20]	Xu X, Wu X C.Study on damage parameter for thermal fatigue of hot work model steel[J]. Shanghai Steel, 2003, 25(2): 1)
[20]	(徐晓, 吴晓春. 热作模具钢热疲劳损伤因子的研究[J]. 上海金属, 2003, 25(2): 1)
[21]	Liu Q D, Liu W Q, Wang Z M.3D atom probe characterazation of alloy carbides in temperature martenite[J]. Acta. Metall. Sin, 2009, 45(1): 1281
[21]	(刘庆冬, 刘文庆, 王泽民. 回火马氏体中合金碳化物的3D原子探针表征 I, 形核[J]. 金属学报, 2009, 45(1): 1281)
[22]	Hu Z F, Wu X F, Wang C X.Coarsening kinetics of multi-component M2C precipitation in secondary hardening alloy steels[J]. Acta. Metall. Sin, 2003, 39(6): 585
[22]	(胡正飞, 吴杏芳, 王春旭. 二次硬化合金钢中多组元强化相 M2C 碳化物的粗化动力学研究[J]. 金属学报, 2003, 39(6): 585)
[23]	Chen Y, Chen Z Z, Dong Han.Adavance on research of tempering secondary hardening of alloy tool and die steel Fe-M-C quenched martensite[J]. Special Steel, 2004, 25(2): 37
[23]	(陈鹰, 陈再枝, 董瀚. 合金工模具钢 Fe-MC 淬火马氏体回火的二次硬化研究进展[J]. 特殊钢, 2004, 25(2): 37)
[24]	Wan R, Sun F, Zhang L.Effects of Mo on high-temperature strength of fire-resistant steel[J]. Mat. Des, 2012, 35(1): 335
[25]	Li P H, Liu J X, Chen X.Study on microstructure of high performance fire resistance and weathering construction steel[J]. Iron and Steel, 2005, 40(6): 74
[25]	(李平和, 刘继雄, 陈晓. 高性能耐火耐候建筑结构用钢的显微组织研究[J]. 钢铁, 2005, 40(6): 74)
[26]	Miyata K, Sawaragi Y.Effect of Mo and W on the phase stability of precipitates in low Cr heat resistant steels[J]. ISIJ international, 2001, 41(3): 281

[1]	MAO Jianjun, FU Tong, PAN Hucheng, TENG Changqing, ZHANG Wei, XIE Dongsheng, WU Lu. Kr Ions Irradiation Damage Behavior of AlNbMoZrB Refractory High-entropy Alloy[J]. 材料研究学报, 2023, 37(9): 641-648.
[2]	SONG Lifang, YAN Jiahao, ZHANG Diankang, XUE Cheng, XIA Huiyun, NIU Yanhui. Carbon Dioxide Adsorption Capacity of Alkali-metal Cation Dopped MIL125[J]. 材料研究学报, 2023, 37(9): 649-654.
[3]	ZHAO Zhengxiang, LIAO Luhai, XU Fanghong, ZHANG Wei, LI Jingyuan. Hot Deformation Behavior and Microstructue Evolution of Super Austenitic Stainless Steel 24Cr-22Ni-7Mo-0.4N[J]. 材料研究学报, 2023, 37(9): 655-667.
[4]	SHAO Hongmei, CUI Yong, XU Wendi, ZHANG Wei, SHEN Xiaoyi, ZHAI Yuchun. Template-free Hydrothermal Preparation and Adsorption Capacity of Hollow Spherical AlOOH[J]. 材料研究学报, 2023, 37(9): 675-684.
[5]	XING Dingqin, TU Jian, LUO Sen, ZHOU Zhiming. Effect of Different C Contents on Microstructure and Properties of VCoNi Medium-entropy Alloys[J]. 材料研究学报, 2023, 37(9): 685-696.
[6]	OUYANG Kangxin, ZHOU Da, YANG Yufan, ZHANG Lei. Microstructure and Tensile Properties of Mg-Y-Er-Ni Alloy with Long Period Stacking Ordered Phases[J]. 材料研究学报, 2023, 37(9): 697-705.
[7]	XU Lijun, ZHENG Ce, FENG Xiaohui, HUANG Qiuyan, LI Yingju, YANG Yuansheng. Effects of Directional Recrystallization on Microstructure and Superelastic Property of Hot-rolled Cu71Al18Mn11 Alloy[J]. 材料研究学报, 2023, 37(8): 571-580.
[8]	XIONG Shiqi, LIU Enze, TAN Zheng, NING Likui, TONG Jian, ZHENG Zhi, LI Haiying. Effect of Solution Heat Treatment on Microstructure of DZ125L Superalloy with Low Segregation[J]. 材料研究学报, 2023, 37(8): 603-613.
[9]	LIU Jihao, CHI Hongxiao, WU Huibin, MA Dangshen, ZHOU Jian, XU Huixia. Heat Treatment Related Microstructure Evolution and Low Hardness Issue of Spray Forming M3 High Speed Steel[J]. 材料研究学报, 2023, 37(8): 625-632.
[10]	YOU Baodong, ZHU Mingwei, YANG Pengju, HE Jie. Research Progress in Preparation of Porous Metal Materials by Alloy Phase Separation[J]. 材料研究学报, 2023, 37(8): 561-570.
[11]	REN Fuyan, OUYANG Erming. Photocatalytic Degradation of Tetracycline Hydrochloride by g-C₃N₄ Modified Bi₂O₃[J]. 材料研究学报, 2023, 37(8): 633-640.
[12]	WANG Hao, CUI Junjun, ZHAO Mingjiu. Recrystallization and Grain Growth Behavior for Strip and Foil of Ni-based Superalloy GH3536[J]. 材料研究学报, 2023, 37(7): 535-542.
[13]	LIU Mingzhu, FAN Rao, ZHANG Xiaoyu, MA Zeyuan, LIANG Chengyang, CAO Ying, GENG Shitong, LI Ling. Effect of Photoanode Film Thickness of SnO₂ as Scattering Layer on the Photovoltaic Performance of Quantum Dot Dye-sensitized Solar Cells[J]. 材料研究学报, 2023, 37(7): 554-560.
[14]	QIN Heyong, LI Zhentuan, ZHAO Guangpu, ZHANG Wenyun, ZHANG Xiaomin. Effect of Solution Temperature on Mechanical Properties and γ' Phase of GH4742 Superalloy[J]. 材料研究学报, 2023, 37(7): 502-510.
[15]	GUO Fei, ZHENG Chengwu, WANG Pei, LI Dianzhong. Effect of Rare Earth Elements on Austenite-Ferrite Phase Transformation Kinetics of Low Carbon Steels[J]. 材料研究学报, 2023, 37(7): 495-501.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed