| 奥氏体合金熔焊接头形变再结晶态的疲劳性能 |
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| 引用本文： | 阮米庆,范引鹤.奥氏体合金熔焊接头形变再结晶态的疲劳性能[J].航空动力学报,1999,14(4):366-370. |
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| 作者姓名： | 阮米庆 范引鹤 |
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| 作者单位： | 南京航空航天大学 |
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| 摘 要： | 焊接接头的微观组织和力学性能不均匀性影响疲劳性能，常用焊后热处理等工艺方法来改善。但奥氏体型合金固态无同素异构转变，焊后热处理难以明显地改善其微观组织和疲劳性能。形变再结晶工艺可以同时改善其微观组织和力学性能，进而可以非常显著地提高该焊接接头的抗疲劳断裂能力。本文主要讨论１Ｃｒ１８Ｎｉ９Ｔｉ熔焊接头形变再结晶态的微观组织和疲劳性能，并以该焊接接头的低循环疲劳性能来验证
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| 关 键 词： | 奥氏体不锈钢 焊接接头 再结晶 疲劳强度 |
| 收稿时间： | 1/1/1999 12:00:00 AM |
A STUDY ON FATIGUE PROPERTY OF AUSTENITIC WELDED JOINTS IN STATE OF DEFORMING RECRYSTALLIZATION |
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| Ruan Miqing and Fan Yinhe.A STUDY ON FATIGUE PROPERTY OF AUSTENITIC WELDED JOINTS IN STATE OF DEFORMING RECRYSTALLIZATION[J].Journal of Aerospace Power,1999,14(4):366-370. |
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| Authors: | Ruan Miqing and Fan Yinhe |
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| Institution: | 2nd Dept.Nanjing University of Aeronautics and Astronautics,Nanjing 210016 |
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| Abstract: | The post weld heat-treatment cannot obviously improve the heterogeneity of microstructure and mechanical property in 1Cr18Ni9Ti welded joints,in particnlar for increasing their fatigue property,because there is no allotropic modification in 1Cr18Ni9Ti alloy,an austenitic stainless steel.Deforming recrystallization can be used to better the microstructure and mechanical properties of austenitic welded joints,and then to enhance their fatigue resistance remarkably.This paper mainly discusses the improvement of the microstructure and fatigue property in 1Cr18Ni9Ti welded joints,and verifies it by the low-cycle fatigue tests. |
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| Keywords: | Austenitic stainless alloy Welded joint Recrystallization Fatigue property |
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