| 锻造工艺对航空轴承钢G13Cr4Ni4Mo4VA棒材冲击性能的影响 |
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| 引用本文： | 王瑞,张洋鹏,战东平,姜周华,薛向欣,杨亮,瞿晓刚,周伟基,张慧书.锻造工艺对航空轴承钢G13Cr4Ni4Mo4VA棒材冲击性能的影响[J].特殊钢,2015,36(6):56-58. |
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| 作者姓名： | 王瑞 张洋鹏 战东平 姜周华 薛向欣 杨亮 瞿晓刚 周伟基 张慧书 |
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| 作者单位： | 1东北大学材料与冶金学院，沈阳110004；
2抚顺特殊钢股份有限公司技术中心，抚顺113001；
3辽宁科技学院冶金学院，本溪117004 |
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| 基金项目： | 国家863项目资助(2012AA03A503) |
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| 摘 要： | G13Cr4Ni4Mo4VA轴承钢（/%:0.13C,4.13Cr,3.52Ni,4.39Mo,1.19V）由6 t真空感应炉+1.3 t（Φ406 mm）真空自耗炉熔炼,并经锻造（1160℃加热,≥1140℃开锻,≥900℃终锻）生产成Φ120 mm棒材。力学性能试样经1 100℃80 min淬火（N2气冷）,-73℃2 h冷处理,3次回火:550℃2 h空冷处理。其冲击值aku为27.1~39.5 J/cm2,低于标准87.5 J/cm2要求。经试验得出,由于锻造温度过高,造成δ铁素体在晶界的析出,使棒材冲击性能降低。通过锻造工艺优化,将钢锭加热温度由原1160℃降至1 110℃,避免δ铁素体的析出,棒材的平均aku冲击值提高至113.6 J/cm2。
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| 关 键 词： | 材航空轴承钢G13Cr4Ni4Mo4VA 锻造工艺 δ铁素体 冲击性能 |
| 收稿时间： | 2015-06-19 |
Effect of Forging Process on Impact Toughness of Bearing Steel Bar G13Cr4Ni4Mo4VA for Aviation |
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| Wang Rui,Zhang Yangpeng,Zhan Dongping,Jiang Zhouhua,Xue Xiangxin,Yang Liang,Qu Xiaogang,Zhou Weiji,Zhang Huishu.Effect of Forging Process on Impact Toughness of Bearing Steel Bar G13Cr4Ni4Mo4VA for Aviation[J].Special Steel,2015,36(6):56-58. |
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| Authors: | Wang Rui Zhang Yangpeng Zhan Dongping Jiang Zhouhua Xue Xiangxin Yang Liang Qu Xiaogang Zhou Weiji Zhang Huishu |
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| Affiliation: | 1 School of Materials and Metallurgy, Northeastern University, Shenyang 110004；
2 Technical Center, Fushun Special Steel Co Ltd, Fushun 113001 ；
3 School of Metallurgy, Liaoning Institute of Science and Technology, Benxi 117004 |
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| Abstract: | The bearing steel G13Cr4Ni4Mo4VA (/% ： 0. 13C, 4.13Cr, 3. 52Ni, 4.39Mo, 1. 19V) is melted by 6 t vacuum induction furnace +1. 3 t (Φ406 mm) vacuum arc remelting furnace, and forged to Φ120 mm bar with heating at 1 160 °C , beginning forging at ≥1 140 ℃ and end forging at ≥900 ℃. The specimen for mechanical properties examination is quenched at 1 100 ℃ for 80 min (N2 gas cooling) , cold treated at -73℃ for 2 h and 3 times tempering treated at 550 ℃ for 2 h, air cooling. The impact value aku is 27. 1 ~ 39. 5 J/cm2, lower than that of requirement of standard i. e. 87. 5 J/cm2. It is obtained by test that due to higher forging temperature, led to δ ferrite precipitating at grain boundaries, the impact value of bar decreases. With optimizing forging process, decreasing ingot heating temperature to 1 110 ℃ from original 1 160 ℃, to avoid the δ ferrite precipitation, the average impact value aku of bar increases to 113. 6 J/cm2. |
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