激光冲击处理
激光冲击处理的相关文献在1993年到2022年内共计110篇,主要集中在金属学与金属工艺、无线电电子学、电信技术、航空
等领域,其中期刊论文68篇、会议论文9篇、专利文献1340776篇;相关期刊44种,包括镇江高专学报、内蒙古科技与经济、材料工程等;
相关会议9种,包括第十届全国冲击动力学讨论会、第九次全国热处理大会、2007年航空装备及先进制造技术国际学术会议等;激光冲击处理的相关文献由142位作者贡献,包括邹世坤、张永康、孔德军等。
激光冲击处理—发文量
专利文献>
论文:1340776篇
占比:99.99%
总计:1340853篇
激光冲击处理
-研究学者
- 邹世坤
- 张永康
- 孔德军
- 曹子文
- 鲁金忠
- 王健
- 巩水利
- 张宏
- 王华明
- 余承业
- 周建忠
- 戴峰泽
- 任旭东
- 吴永忠
- 杨兴华
- 葛茂忠
- 姚红兵
- 张晓兵
- 李应红
- 杨继昌
- 殷苏民
- 王志平
- 谭永生
- 车志刚
- 郭大浩
- 马壮
- 龙丹
- 任乃飞
- 冯爱新
- 叶云霞
- 吴鸿兴
- 周朝政
- 唐亚新
- 张凌峰
- 李强
- 李晓轩
- 杨昭
- 汪诚
- 花银群
- 邹鸿承
- 项建云
- J·G·克莱
- M·N·阿泽尔
- P·K·贝尼策维茨
- P·P·吴
- S·曼纳瓦
- T·J·罗克斯特罗
- Viktor Serebryakov
- 冯亚云
- 刘小冬
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张鹏举;
陈静青;
杨霄
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摘要:
对16MnR母材进行激光冲击工艺实验,获得优化的激光冲击工艺参数。对激光-MAG复合焊焊接接头进行表面处理,分析接头激光冲击前后状态的残余应力分布及抗应力腐蚀性能变化。结果表明:对16MnR钢平板经激光冲击处理后,在材料表面最大可引入475μm厚度的塑性变形层,并同时引入-593 MPa的压应力分布。采用优化激光冲击工艺对16MnR钢焊接接头进行表面处理后,可有效减小焊接接头表面的残余拉应力分布。在3.5%NaCl(质量分数)条件下对激光冲击处理前后的接头试样进行慢应变速率应力腐蚀实验,发现激光冲击处理前后16MnR钢焊接接头的应力腐蚀敏感指数I_(SSRT)分别为0.106和0.104,表明激光冲击可以提高接头的抗应力腐蚀能力。
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王亚;
周文;
陈浩;
葛茂忠
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摘要:
为了提高GH3039高温合金抗磨损能力,采用高能激光束对GH3039高温合金试样进行冲击处理.室温下,开展了GH3039母材和激光冲击试样干摩擦对比实验.采用光学显微镜、扫描电镜和三维光学轮廓仪分析了激光冲击前后试样微观结构、磨痕和表面粗糙度.结果表明:激光冲击之后,试样表层晶粒明显细化,表面粗糙度略有增加,形成了深度达1.8 mm左右硬化层;同母材相比,激光冲击试样表面显微硬度提高了25.8%,磨损率降低了46.4%;此外,母材和冲击试样的磨损量均随着时间的延长而增大,但相同时间下,激光冲击试样的磨损量明显低于母材,说明激光冲击处理能显著提高GH3039高温合金抗磨损性能,这归因于激光冲击处理诱导的晶粒细化和形变强化.
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魏新龙;
凌祥;
张萌
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摘要:
利用激光冲击处理技术对304不锈钢片试样进行激光冲击处理.采用慢应变速率拉伸实验方法评价304不锈钢激光冲击处理前后在80 °C时、质量分数为3.5%NaCl溶液中的应力腐蚀开裂敏感性.通过金相显微镜(OM)和扫描电子显微镜(SEM)分析激光冲击处理后表面强化层的晶粒细化程度.采用显微硬度计测定了表面显微硬度分布及影响层深度.实验结果表明,激光冲击处理未能显著细化试样表层晶粒,但可以提高显微硬度.随着冲击次数增加,表面显微硬度值也增加,影响层厚度提高.慢应变速率拉伸应力腐蚀试验结果表明激光冲击处理可以降低不锈钢应力腐蚀开裂敏感性,且双面冲击处理比单面冲击处理效果更好.%The 304 stainless steel was processed by laser shock processing (LSP).The stress corrosion cracking (SCC) behavior of 304 stainless steel specimen before and after LSP was evaluated using slow strain rate test (SSRT)in 3.5% NaCl solution at 80 °C.Surface microstructure modification was evaluated by optical microscopy (OM) and scanning electron microscopy (SEM).Micro-hardness distribution in depth and affected depth were investigated by the micro-hardness tester.Results showed that surface refined grains were not found after LSP.However, micro-hardness was increased by LSP.With the increase of shot number, micro-hardness and thickness of affected layer were increased.SSRT results showed that SCC sensitivities of 304 stainless steel were decreased by LSP.SCC sensitivities of two-side LSP with higher resistance were lower than those of one-side one.
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宋巍;
邹世坤;
曹子文
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摘要:
概述了国外激光冲击处理技术在核工业焊接材料结构上的应用情况,并介绍了国内在核工业不锈钢等材料焊缝激光冲击处理上的一些研究.根据日本东芝公司无吸收层激光冲击强化处理反应堆压力容器的特点,展望了焊接区激光冲击处理在我国核电技术发展上的应用前景,指出我国在核电站建设中如何利用激光冲击处理技术延缓设备老化和应力腐蚀开裂的问题.
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钱绍祥;
殷晓中;
王琦;
刘波;
冷承业
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摘要:
The surface of LY12CZ aluminum alloy hole component was treated with Nd:glasss laser,and its residu-al stress was tested and analyzed.In the impact of laser shock processing using the laser power density of 1.75 GW/cm2 and spot diameter of 6mm,the shocked area produced compressive residual stress with its deepness about 1.2mm.The maximum surface residual stress is -57MPa and the maximum residual stress in the thickness direc-tion is -36MPa.The optimization of LSP technological parameters can obtain good residual stress field.%采用高功率 Nd:glass 激光器对 LY12CZ 铝合金小孔构件表面进行激光冲击强化处理,并对冲击区域进行残余应力场的测试与分析。结果显示,在激光功率密度为1.75 GW/cm2和光斑直径为6 mm 的强激光冲击作用下,冲击区域产生了残余压应力场,层深约1.2 mm,表面最大残余应力为-57 MPa,厚度方向上最大残余应力为-36 MPa。优化后的激光冲击处理工艺参数能够获得较好的残余应力场。
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葛茂忠;
项建云;
张永康
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摘要:
为了研究激光冲击处理对AZ31B镁合金力学性能的影响,采用波长为1054nm,脉冲宽度为15ns,脉冲能量为10J,光斑直径为3mm的YAG脉冲激光,对变形镁合金AZ31B薄板试样表面进行冲击处理.结果表明:根据优化的工艺参数,激光冲击处理能在AZ31B镁合金上制备出纳米结构表层,表面晶粒尺寸约为20nm;试样表面激光诱导的残余压应力高达-125MPa;激光冲击处理试样的抗拉强度提高了16.9%;屈服强度提高了16.3%;表面硬度提高了91.8%.利用透射电镜(TEM)、扫描电镜(SEM)观测激光冲击试样微观结构,并分析了力学性能提高的机理.
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钱绍祥;
殷苏民;
张飞霞;
张志凤
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摘要:
目的研究光斑搭接率对激光冲击处理后残余应力分布的影响。方法采用不同的光斑搭接率对AISI202不锈钢焊接接头进行激光冲击处理,利用X射线衍射法测定激光冲击强化后的残余应力。结果随着光斑搭接率的增加,残余应力场得到增强,并且应力分布更加均匀。搭接率由50%增加到80%,平均横向残余压应力增加了20%,波动减少了30%;平均纵向残余压应力增加了30%,波动减少了13%。结论提高光斑搭接率可以优化激光冲击处理后焊接接头的应力分布。
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孔德军;
龙丹;
吴永忠;
周朝政
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摘要:
Surface of X80 pipeline steel welded joint was processed by laser shock processing, and H2S stress corrosion cracking (SCO behaviors of X80 pipeline steel welded joints in NACE solution (without H2S) and NACE solution (saturated H2S) were analyzed with slow strain rate testing (SSRT). The mechanism of refined grains and compressive residual stress of X80 pipeline steel welded joints by laser shock processing on H2S stress corrosion was investigated. The experimental results show that surface qualities of the welded joints are improved by laser shock process 1 and the strengthened layer is formed, which make the refined grain and compressive residual stress on the surface of X80 pipeline steel welded joints. The hydrogen-compress is endured by the large number of grains to obviously increase its critical stress value. The sensibility index of stress corrosion IScc by laser shock processing is decreased by 5. 84% as compared to that in primitive state with the result that its properties of resistance SCC were improved. The surface roughness of X80 pipeline steel welded joint is increased by laser shock processing, and the SCC resistance of X80 pipeline steel welded joint is reduced to a certain extent.%利用激光冲击波对X80管线钢焊接接头进行了表面改性处理,通过慢拉伸试验分析了X80管线钢焊接接头在NACE溶液(不含H2S和含饱和H2S)的H2S应力腐蚀开裂(SCC)行为,研究了经激光冲击处理后焊接接头表面细化的晶粒和残余应力对H2S应力腐蚀的影响机理.结果表明:激光冲击处理可改善焊接接头的表面质量,形成强化层,产生晶粒细化和残余压应力,获得细小均匀的针状铁素体组织,因大量晶粒承受氢压,可显著提高材料的临界应力值.应力腐蚀敏感指数ISCC比原始状态下降了5.84%,提高了X80管线钢焊接接头抗SCC的性能.激光冲击处理使X80管线钢焊接接头表面粗糙度有所上升,在一定程度上又降低了X80管线钢焊接接头SCC抗力.
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邹世坤;
曹子文;
刘方军
- 《第八届全国激光加工学术会议》
| 2006年
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摘要:
介绍了激光冲击处理(LSP)的特点和应用情况,研究了激光冲击处理对钛合金表面轮廓、残余应力和疲劳性能的影响.结果表明,经激光冲击处理后效果十分明显,钛合金获得光斑大小的凹坑,凹陷值10~20 μm,残余应力最大可达-600 MPa以上,表面残余应力水平与高强度喷丸相当,但塑性变形程度明显大于喷丸;合适的激光参数和搭接率可以获得光滑平整的冲击区,双光束冲击处理涡轮叶片后有明显冲击痕迹和残余压应力,并且没有发现变形和裂纹。
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邹世坤;
王健;
王华明
- 《第五届先进材料技术研讨会》
| 2000年
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摘要:
激光冲击处理技术(又称激光喷丸)是随强脉冲激光的出现发展起来的一种新型表面强化技术,它是利用激光导致冲击压力波(压强达GPa量级)在金属材料表层产生应变硬化.介绍了激光冲击处理技术的发展过程,约束模式下强脉冲激光导致冲击波的理论模型,讨论激光冲击处理技术工程化必须解决的工艺问题和发展动向.激光器的功率、频率、光路、约束布置方式的工艺准备时间还决定了激光冲击处理的效率和空间灵活性,因此激光冲击处理的发展重点就是发展高频率、强脉冲的激光器,清洁高效的约束方式和光路设置,以降低运行成本和开拓新的应用领域.
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Kong Dejun;
Long Dan;
Wu Yongzhong
- 《第十届全国冲击动力学讨论会》
| 2011年
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摘要:
The surface of X80 pipeline steel welded joints were strengthened by laser shock wave, the tensile mechanical properties of resulting joint and welded joint in original state were analyzed through the tensile test, the fracture morphologies were observed with scanning electron microscopy (SEM), chemical composition was analyzed by spectrum analyzer, and their fracture mechanisms were investigated. The experimental results showed that the X80 pipeline steel welded joint in original state had the continuous yield feature, without obvious yield platform and elongation was very big, the tensile fracture appeared obvious layered crack. After the X80 pipeline steel welded joint was processed by laser shock, its strength did not improved, its dimple dimension and depth became bigger, and the fracture toughness had improved.
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Kong Dejun;
Long Dan;
Wu Yongzhong
- 《第十届全国冲击动力学讨论会》
| 2011年
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摘要:
The surface of X80 pipeline steel welded joints were strengthened by laser shock wave, the tensile mechanical properties of resulting joint and welded joint in original state were analyzed through the tensile test, the fracture morphologies were observed with scanning electron microscopy (SEM), chemical composition was analyzed by spectrum analyzer, and their fracture mechanisms were investigated. The experimental results showed that the X80 pipeline steel welded joint in original state had the continuous yield feature, without obvious yield platform and elongation was very big, the tensile fracture appeared obvious layered crack. After the X80 pipeline steel welded joint was processed by laser shock, its strength did not improved, its dimple dimension and depth became bigger, and the fracture toughness had improved.
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- 中国科学技术大学
- 公开公告日期:2001-09-19
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摘要:
本发明涉及激光应用技术。所述用于激光冲击强化的安全无污染冲击头,将起约束作用的约束玻璃板和会聚透镜安装在同一筒体内的两端,并分别由前、后盖固定。在约束玻璃板的外侧表面上涂有光能吸收涂层,与该层接触的前盖中部是金属或非金属的薄层,以传递冲击波。当涂层产生等离子体爆炸冲击波时,被破碎的玻璃片留在筒体内,有利于人身安全及环境保护,从而能够将整体的激光冲击装置直接置于生产现场使用。
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