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| PREDICTIVE MODEL FOR ATMOSPHERIC CORROSION OFALUMINIUM ALLOY BY ARTIFICIAL NEURAL NETWORK |
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| 北京航空材料研究院 |
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Abstract An investigation of the stress corrosion cracking resistance of 40CrNi2Si2MoVA high strength steel in typical atmospheric environment is presented. Direct tension and pre-cracked stress-corrosion specimens were used. The direct tension stress-corrosion specimens were taken from the longitudinal direction of stick and stress level was 65, 75, 85 and 95 percent of the σ0.2 respectively. The pre-cracked specimens were taken from the forging and applied constant load. The samples were exposed in Beijing, Tuandao, and Wanning atmospheric test station. The results showed that SCC performance of 40CrNi2Si2MoVA steel depend on the environments. High SCC sensitivity was expressed in marine environment. The SEM showed that the crack initiated from pitting corrosion in the surface and developed to inner of the samples. It is intergranular mode of cracking, secondary cracking existed on the fracture surface. Large size secondary cracking increases obviously with the higher of stress level. Serious corrosion was observed on the samples exposed in marine environment.
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Received: 03 March 2006
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[1]Zhang S J.Research on SCC of 300M[D].Beijing:Beijing Instituteof Aeronautical Materials,1991(张思久.300M钢的应力腐蚀研究[D].北京:北京航空材料研究院,1991)
[2]Xiong J J,Wu R G,Qian Z Q.Atmospheric stress corrosion test ofhigh strength structure steels[J].J.Mater.Eng.,1993,(1):24-27(熊家锦,吴荣贵,钱兆庆.高强度结构钢的大气应力腐蚀试验[J].材料工程,1993,(1):24-27)
[3]NASA TM-78257.Stress corrosion cracking evaluation of marten-sitic percipitation hardening stainless steels,1971
[4]Helmut Haselmair.Stress corrosion cracking of type 303 stainlesssteel in a road tunnel atmosphere[J].Mater.Performance,1992,31(6):60-63
[5]Oldfield J W,Dodd B.Room temperature stress corrosion cracking ofstainless steels in indoor swimming pool atmosphere[J].Br.Corros.,1991,261(2):173-182
[6]Han W,Wang J,Wang Z Y.Study on atmospheric corrosion of lowalloy steels[J].J.Chin.Soc.Corro.Prot.,2004,24(3):147-150(韩薇,汪俊,王振尧.碳钢和低合金钢耐大气腐蚀规律研究[J].中国腐蚀与防护学报,2004,24(3):147-150)
[7]Zhong Q D.Relationship between atmospheric corrosion and mi-crostructure of cooled-rolled low alloy steeel[J].J.Chin.Soc.Cor-ros.Prot.,2004,24(3):151-154(钟庆东.冷轧低碳钢板表面形貌与其耐大气腐蚀性能的关系[J].中国腐蚀与防护学报,2004,24(3):151-154)
[8]Yan M C,Weng Y J.Effects of environmental solution on electro-chemical behaviors related to SCC of pipe line steels[J].J.Chin.Soc.Corros.Prot.,2005,25(1):34-38(闫茂成.翁永基.环境溶液对管道应力腐蚀过程电化学行为的影响[J].中国腐蚀与防护学报,2005,25(1):34-38)
[9]Ni H F,Ling X,Peng W W.Prevention of stress corrosion crackingin weld joint of typ 304 stainless steel by class-bead peening[J].J.Chin.Soc.Corros.Prot.,2005,25(3):152-156(倪红芳,凌祥,彭薇薇.玻璃喷丸处理提高304不锈钢焊接接头抗应力腐蚀性能的研究[J].中国腐蚀与防护学报,2005,25(3):152-156)
[10]Zhang X Y,Guo Y H,Tao C H,et al.Study on the desk-topspring type stress corrosion cracking testing machine[J].Equip-ment Enviromental Engineering,2004,1(2):18-22(张晓云,郭玉海,陶春虎等.便携式拉伸应力腐蚀试验器的研制[J].装备环境工程,2004,1(2):18-22)
[11]Desk-top spring type stress corrosion cracking testing machine[P].ZL 022941339,2002,China便携式拉伸应力腐蚀试验装置[P].ZL 022941339,2002.中国)
[12]NASA SP-8082,Stress Corrosion Cracking of Metal[S].1977
[13]Zhang S J.Research on SCC mechanism of 300M[D].Beijing:Bei-jing Institute of Aeronautical Materials,1991(张思久.300M钢的应力腐蚀机理初探[D].北京:北京航空材料研究院,1991) |
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