| 激光复合处理K24超合金表面残余应力 |
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| 引用本文： | 鲁金忠,张永康,顾韡,孔德军,冯爱新.激光复合处理K24超合金表面残余应力[J].吉林大学学报(工学版),2008,38(2):309-0313. |
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| 作者姓名： | 鲁金忠 张永康 顾韡 孔德军 冯爱新 |
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| 作者单位： | 江苏大学,江苏省光子制造科学与技术重点实验室,江苏,镇江,212013 |
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| 基金项目： | 国家自然科学基金项目(50705038)，江苏省“六大人才高峰”项目(06-D-023)，江苏大学第六批学生科研课题立项(06A132) |
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| 摘 要： | 利用激光冲击技术对经激光淬火形成的K24超合金先进行了复合处理,用X-350A型X射线应力仪测定了激光复合处理区的残余应力,同时分析了复合处理区在500℃回火处理工艺后的残余应力变化规律,并对K24超合金复合处理区疲劳寿命的影响进行了研究。结果表明,激光冲击处理K24超合金淬火区后的残余压应力为600 MPa以上,经500℃回火处理81、6 h后残余应力仍然大于基体的残余压应力,其回火稳定性较好,有利于提高K24超合金的疲劳寿命。
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| 关 键 词： | 光电子学与激光技术 K24超合金 激光复合处理 残余应力 回火处理 疲劳寿命 |
| 文章编号： | 1671-5497(2008)02-0309-05 |
| 收稿时间： | 2007-01-12 |
| 修稿时间： | 2007年1月12日 |
Residual stress of K24 superalloy surface by laser multiple processing |
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| Lu Jin-zhong,Zhang Yong-kang,Gu Wei,Kong De-jun,Feng Ai-xin.Residual stress of K24 superalloy surface by laser multiple processing[J].Journal of Jilin University:Eng and Technol Ed,2008,38(2):309-0313. |
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| Authors: | Lu Jin-zhong Zhang Yong-kang Gu Wei Kong De-jun Feng Ai-xin |
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| Affiliation: | Jiangsu Provincial Key Laboratory of Photon Manufacturing,Jiangsu University,Jiangsu Zhenjiang 212013,China |
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| Abstract: | The K24 superalloy specimens was treated by the laser multiple processing and its residual stresses were measured by a model X-350A X-ray stress tester.The measurement shows that the compressive residual stress of the laser multiple processed K24 superalloy surface exceeds 600 MPa,and after 8 and 16 h tempering treatment at 500 ℃,the residual stresses still exceed the average residual stress of the K24 base body,showing a good stability against the tempering,which is of help to improvement of the fatigue life of the K24 superalloy. |
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| Keywords: | optoelectronics and laser K24 superalloy laser multiple processing residual stress tempering treatment fatigue life |
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