Microstructure and Properties of SKD61 Die Steel Strengthened by Biomimetic Laser-Remelting

SHI Hua-liang; LI Ji-qiang; JIA Zhi-xin; LIU Li-jun; ZHENG Ya-hong

Materials and Mechanical Engineering > 2014 > 38(8): 39-43.

SHI Hua-liang, LI Ji-qiang, JIA Zhi-xin, LIU Li-jun, ZHENG Ya-hong. Microstructure and Properties of SKD61 Die Steel Strengthened by Biomimetic Laser-Remelting[J]. Materials and Mechanical Engineering, 2014, 38(8): 39-43.

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Microstructure and Properties of SKD61 Die Steel Strengthened by Biomimetic Laser-Remelting

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Received Date: March 31, 2014

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In order to improve the surface hardness and anti-fatigue properties, the SKD61 die steel was strengthened by laser-remelting. The microstructure and chemical composition distribution of SKD61 steel after laser-remelting were observed and analyzed by optical microscopy (OM), scanning electron microscopy (SEM) and energy dispersive X-ray spectrometer (EDS). The hardness of laser melted zone and the service life of the processed die-casting die were also tested. The results show that SKD61 steel had three layer structures, including the melting zone, heat affected zone and base metal. The microstructure of melted zone was very fine equiaxial crystal and columnar crystal, and the impurity phase was eliminated. The alloying elements distributed uniformly after laser-remelting process. Compared with conventional heat treatment, the microhardness of melted zone increased significantly. The service life of SKD61 steel top cover die-casting die had more than doubled after laser-remelting.
- SKD61 die steel,
- laser-remelting,
- microstructure,
- microhardness

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[1]	REVEL P, KIRCHER D, BOGARD V. Experimental and numerical simulation of a stainless steel coating subjected to thermal fatigue［J］.Materials Science and Engineering: A,2000,290(1/2): 25-32.
[2]	ANDERS P, STURE H, JENS B. Failure modes in field-tested brass die casting dies［J］.Journal of Materials Processing Technology,2004,148(1): 108-118.
[3]	吴玉道,王洁民.铝压铸模具失效分析［J］.机械工程材料, 1989,13(6): 49-51.
[4]	SALAS O, KEARNS K, CARRERA S, et al. Tribological behavior of candidate coatings for Al die casting dies［J］.Surface & Coatings Technology,2003,172(2/3): 117-127.
[5]	张春华,李春彦,张松,等.H13模具钢激光熔凝层的组织及性能［J］.金属热处理, 2004, 29(10): 14-17.
[6]	LIANG H, MA F R, ZHANG T H, et al. Surface structure and corrosion properties of binary Ti-C and Mo-C coatings Co-deposited by filtered vacuum arc plasma deposition system［J］.Surface & Coatings Technology,2000,131(1/3): 58-61.
[7]	STARLING C M D, BRANCO J R T. Thermal fatigue of hot work tool steel with hard coatings［J］.Thin Solid Films, 1997,308/309(31): 436-442.
[8]	陈莉,周宏,赵宇,等.不同形态和间隔非光滑表面模具钢的磨损性能［J］.机械工程学报,2008,44(3): 173-176.
[9]	孙娜,周宏,单宏宇,等.激光制备放生非光滑表面蠕墨铸铁的耐磨性［J］.吉林大学学报, 2009,9(5): 1157-1161.
[10]	周宏,张志辉,任露泉,等.仿生非光滑表面45#钢模具的热疲劳性能［J］.材料科学与工艺, 2004,6(12): 561-565.
[11]	JIA Zhi-xin, HU Ning-bo, LI Ji-qiang, et al. Die-casting die design based on the application of CAE simulation［J］.Applied Mechanics and Materials, 2012, 201/202: 541-544.
[12]	LEE J H, JANG J H, JOO B D, et al. Laser surface hardening of AISI H13 tool steel［J］.Transactions of Nonferrous Metals Society of China, 2009, 19(4): 917-920.
[13]	尹钟大,李晓东.4Cr5MoV1Si钢表面激光快速熔凝的研究［J］.中国激光,1991,18(9): 709-711.
[14]	CAHN R W, HAASEN P. Physical metallurgy［M］.［S.l.］: Elsevier,1996: 687-700.
[15]	尹钟大,李晓东.4Cr5MoV1Si钢激光表面熔凝处理［J］.兵器材料科学与工程,1988(4): 28-32.
[16]	葛云龙,胡壮麒,高薇,等.激光快速熔凝对一种铸造Ni基超合金显微组织和耐磨性能的影响［J］.金属学报, 1984,20(2): 237-241.
[17]	张志辉.激光仿生耦合处理热作模具的热疲劳性能研究［D］.长春: 吉林大学, 2007.
[18]	李美艳,王勇,韩彬,等.激光熔凝处理高碳高铬轧辊钢的组织及硬度［J］.机械工程材料, 2009,33(9): 76-78.

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