研究了预处理温度对低温用马氏体高强度不锈钢板材强度的影响。通过对材料进行力学性能检测、金相检测、X射线衍射分析后表明：热轧材750~850 ℃预处理遗传了热轧态的组织，使最终固溶处理后的奥氏体内累积了较高的缺陷密度，这些高密度缺陷最终遗传到马氏体内。850 ℃预处理的材料既存在缺陷强化，又降低最终的残余奥氏体含量，因此出现强度峰值。冷轧材的组织遗传、再结晶等特征温度低于热轧材，25%和50%变形的冷轧材分别在800 ℃和750 ℃预处理出现强度峰值。
The effect of preliminary treatment temperature on the strength of martensitic stainless strip steel for cryogenic application has been investigated. After the investigation of mechanical properties, metallographic examination, X-ray diffraction, it can be seen that the original structural inheritance occur in the hot rolled steel strip preliminarily treated at temperatures between 750 ℃ and 850 ℃, which lead to an accumulation of defects in the austenite after finally heating for austenitizing. The high density defects in the austenite are inherited by the martensite formed after final solution treatment. The peak strength is present in hot rolled steel strip preliminarily treated at 850 ℃, which is attributed to both the defect strengthening in the martensite and less residual austenite in it. In the cold rolled steel, some characteristic temperatures, at which the structural inheritance and recrystallization take place, decrease in consecutive order. For the cold rolled steel strips with 25% and 50% reduction, the strength peaks are achieved after being preliminarily treated at 800 ℃ and 750 ℃, respectively.
参考文献
| [1] | |
| [2] | Michhler T, Toughness and hydrogen compatibility of austenitic stainless steel welds at cryogenic temperature[J], Hydrogen Energy, 2007, 32(16): 4081-4088[2] Ibrahim O H, Ibrahim I S and Khalifa T A F, Impact behavior of different stainless steel weldments at low temperature[J]. Engineering Failure Analysis, 2010, 17(5): 1069-1076[3] Kagan E A, Potak Ya M, Sachkov V V, Kozlovskaya V I and Grikurov G N. High-strength steel for cryogenic temperatures[J]. Metal Science and Heat Treatment, 1971, 13(10): 821-822[4] Kagan E A, Kozlovskaya V I, Grikurov G N and Trantsevich Ya V. Investigation of mechanical properties of 03Kh12N10MT steel at low temperatures Strength of Materials[J]. 1975, 7(12): 1531-1533[5] Il’ina V P and Troitskaya V A. Effect of low-temperature quenching on the microstructure and capacity for corrosion cracking of steel 03Kh11N10M2T-VD[J]. Metal Science and Heat Treatment, 2000,42(2): 53-56[6] 文志旻，苏 杰等，预处理温度对00Cr12Ni10MoTi马氏体不锈钢强度的影响[J]，钢铁，2011，46（9）：78-81[7] Sadovskii V D, Bogacheva G N and Umova V M, Recrystallization of maraging alloys[J]. Metal Science and Heat Treatment, 1969, 11 (4): 258-259[8] Ryzhak S S, Belyakov L N, Potak Ya M, Solov'eva G G, Pevzner L M, Sachkov V V and Revyakina O K, Some rules for phase transformations in 000N18K9M5T steel[J], Metal Science and Heat Treatment, 1972, 14 (2): 150-155 |
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