300M钢超音速火焰喷涂WC/17Co涂层的疲劳性能

航空材料学报, 2007, 27(4): 14-18. doi: 10.3969/j.issn.1005-5053.2007.04.004

300M钢超音速火焰喷涂WC/17Co涂层的疲劳性能

邓春明 ^1, , 刘敏 ^2, , 周克崧 ^3, , 伍超群 ^4,

1.广州有色金属研究院,材料表面中心,广州,510651;广东工业大学,材料与能源学院,广州,510090

2.广州有色金属研究院,材料表面中心,广州,510651

3.广州有色金属研究院,材料表面中心,广州,510651

4.广州有色金属研究院,材料表面中心,广州,510651;广东工业大学,材料与能源学院,广州,510090

关键词： 300M钢 , WC/17Co , 超音速火焰喷涂 , 疲劳性能 , 夹杂物 , 喷丸 , 涂层

Fatigue Property of HVAF Sprayed WC/17Co Coating on 300M Steel

夹杂物尺寸对超高强结构钢的疲劳寿命有明显影响.疲劳断口分析表明,300M超高强钢中的疲劳裂纹源主要由其中的夹杂物所造成.而超音速火焰喷涂WC/17Co处理后300M钢裂纹源全部来自于基体中的夹杂,夹杂组成均为Al2O3.xCaO.ySiO2.分别采用统计极值法和广义Pareto分布对不同质量300M钢中的最大夹杂物进行估计,与实际疲劳断裂的最大夹杂物尺寸进行对比,并对不同质量300M钢的疲劳极限进行估算.HVAF处理使300M钢中次表面的残余压应力增大,对抑制裂纹萌生和扩展有利.试验结果表明,在低载荷下HVAF提高了基体疲劳寿命,而在高载荷下由于压应力作用有限,以及喷砂氧化铝对300M钢表面造成损伤带来负面作用而降低300M钢的疲劳寿命.

参考文献

[1]	赵振业,宋德玉,李向斌,杨树勋,马新闻.一种超高强度钢构件抗疲劳实验研究[J].中国工程科学,2005(10):51-55.
[2]	赵振业.先进飞机结构材料的发展[J].材料工程,1995(01):4.
[3]	MICHEL DARMON;PIERRE CALMON;BERTR.An integrated model to simulate the scattering of ultrasounds by inclusions in steels[J].Ultrasonics,2004(42):237-241.
[4]	MURAKAMI Y;KODAMA S;KONUMA S .Quantitative evaluation of effects of non-metallic inclusions on fatigue strength of high strength steels,Ⅰ:basic fatigue mechanism and evaluation of correlation between the fatigue fracture stress and the size and location of non-metallic inclusions[J].International Journal of Fatigue,1989,11:291-298.
[5]	MURAKAMI Y;USUKI H .Quantitative evaluation of effects of non-metallic inclusions on fatigue strength of high strength steels,Ⅱ:fatigue limit evaluation based on statistics for extreme values of inclusion size[J].International Journal of Fatigue,1989,11(04):299-307.
[6]	H.V. Atkinson;G. Shi .Characterization of inclusions in clean steels: a review including the statistics of extremes methods[J].Progress in materials science,2003(5):457-520.
[7]	LEEG K O;GRAHAM M;CHANG P et al.The replacement of electroplating[J].Surface and Coatings Technology,1996,81:99-105.
[8]	DORFMAN M R;NESTLER M;NICOLL A.Hard chromium coatings outdated[J].Sulzer Technical Review,1997(01):20-23.
[9]	MURAKAMI Y;USUKI H.Quantitative evaluation of effects of non-metallic inclusions on fatigue strength of high strength steels,Ⅱ:fatigue limit evaluation based on statistics for extreme values of inclusion size[J].International Journal of Fatigue,1989(11):229-307.
[10]	SURRESH S;王中光.材料的疲劳[M].北京:国防工业出版社,1999
[11]	PADILLA K;VALASQUEZ A;BERRIOS A J A et al.Fatigue behavior of a 4140 steel coated with NiMoAl deposit applied by HVOF thermal spray[J].Surface and Coatings Technology,2002,150(2-3):51-162.

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