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The delayed fracture behavior of medium-carbon high strength spring steel containing different amounts of boron (0. 000 5%, 0. 001 6%) was studied using sustained load delayed fracture test. The results show that delayed fracture resistance of boron containing steels is higher than that of conventional steel 60Si2MnA at the same strength level and it increases with the increase of boron content from 0. 000 5 % to 0. 001 6 %. The delayed fracture mode is mainly intergranular in the boron containing steels tempered at 350 ℃, which indicates that the addition of boron does not change the fracture character. However, the increase of boron content enlarges the size of the crack initiation area. Further study of phase analysis indicates that most boron is in solid solution, and only a very small quantity of boron is in the M3 (C, B) phase.

参考文献

[1] 惠卫军,董瀚,翁宇庆,WENG Yu-qing.汽车螺旋悬挂弹簧用钢的发展动向[J].钢铁研究学报,2001(02):67-72.
[2] Nam W.J.;Choi H.C. .High strength steel wire rod for suspension coil spring[J].Wire Journal International,1996(5):94-97.
[3] Matsuyama S .Delayed Fracture of High Strength Steels[J].Testsu to Hagane,1994,80(09):679-684.
[4] 惠卫军,董瀚,翁宇庆.耐延迟断裂高强度螺栓钢的研究开发[J].钢铁,2001(03):69-73.
[5] CHEN J M;WU J K .Hydrogen Diffusion Through CopperPlated AISI 4140 Steels[J].Corrosion Science,1992,33(05):657-666.
[6] Nakasato F;Takahashi M.Delayed-Failure Analysis of High-Strength Structural Bolts[J].Metals and Technology,1980(11):449-455.
[7] Inoue T;Namba Y .The Effect of Phosphorus Segregation at Grain Boundaries and Boron Addition on the Impact Toughness of Medium Carbon Tempered Martensite Steels With 150 kg/mm2 StrengthLevel[J].Tetsu To Hagane-Journal of the Iron & Steel Institute of Japan,1991,77:2155-2162.
[8] Liu C M;Nagoya T;Abiko K et al.Effect of Boron on the Grain Boundary Segregation of Phosphorus and Intergranular Fracture in High-Purity Fe-0.2% P-B Alloys[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1992,23A:263-269.
[9] Shin-ichi KOMAZAZKI;Shingo WATANABE;Toshihei MISAWA .Influence of Phosphorus and Boron on Hydrogen Embrittlement Susceptibility of High Strength Low Alloy Steel[J].ISIJ International,2003(11):1851-1857.
[10] CHU Wu-yang.Hydrogen Damage and Delayed Fracture[M].北京:冶金工业出版社,1988
[11] Yamsaki S;Takahashi T .Delayed Fracture Mechanism in High Strength Steels by Acoustic Emission Source Wave Analysis[J].Testsu to Hagane,1997,83(07):460-465.
[12] He H L;Chu Y Y;Chang H L .Distribution of Boron in Steel[J].Acta Metallurgica Siniea,1977,13(04):235-245.
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