基于激光冲击的W6Mo5Cr4V2高速钢刀具材料疲劳性能研究
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摘要
以W6Mo5Cr4V2(M2)高速钢刀具材料为试样,研究激光冲击对M2材料疲劳性能的影响。对M2试样进行激光冲击处理、金相组织观察、残余应力测量及疲劳性能检测等试验,分析激光冲击对试样表层材料微观组织、残余应力和疲劳性能的作用机理。结果表明,激光冲击后M2试样表层微观组织晶粒细化,晶界增多,形成位错与孪晶等晶格缺陷;激光冲击区产生一定深度的残余压应力层,横截面上的残余压应力由表及里逐渐减小,表面残余压应力值最大,距表面一定距离范围内,残余压应力值基本稳定;激光冲击前后,试样的平均疲劳寿命有显著提高,不同的激光冲击工艺参数对试样的疲劳性能产生不同的影响。激光冲击处理使M2高速钢表层材料得到强化,疲劳性能有效改善。
Taking W6Mo5Cr4V2 (M2) high speed steel cutter material as sample, the effect of laser shock on fatigue performance of M2 material is studied. Experiments of laser shock processing, metallographic observation, residual stress measurement and fatigue performance test on M2 samples are conducted. The mechanism of laser shock on surface microstructure, residual stress and fatigue performance is analyzed. The results show that after laser shock, the surface microstructure grains of M2 samples are refined and the grain boundaries increase, forming lattice imperfection such as dislocation and twin crystal. A certain depth of residual compressive stress layer is caused within shocked area. The residual compressive stress on cross section is decreased from surface to center. The surface residual compressive stress is maximum. In a certain distance from surface, the residual compressive stress is stable. Before and after laser shock, the average fatigue life of sample is significantly improved. Different laser shock process parameters have differert effects on the fatigue performance of the sample. By laser shock, the surface material of the M2 high speed steel is strengthened and its fatigue performance is improved.
Taking W6Mo5Cr4V2 (M2) high speed steel cutter material as sample, the effect of laser shock on fatigue performance of M2 material is studied. Experiments of laser shock processing, metallographic observation, residual stress measurement and fatigue performance test on M2 samples are conducted. The mechanism of laser shock on surface microstructure, residual stress and fatigue performance is analyzed. The results show that after laser shock, the surface microstructure grains of M2 samples are refined and the grain boundaries increase, forming lattice imperfection such as dislocation and twin crystal. A certain depth of residual compressive stress layer is caused within shocked area. The residual compressive stress on cross section is decreased from surface to center. The surface residual compressive stress is maximum. In a certain distance from surface, the residual compressive stress is stable. Before and after laser shock, the average fatigue life of sample is significantly improved. Different laser shock process parameters have differert effects on the fatigue performance of the sample. By laser shock, the surface material of the M2 high speed steel is strengthened and its fatigue performance is improved.
引文
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[18] LI ZHEN.Investigation of residual stress and fatigue performance of titanium alloy part with hole by laser shock processing[D].Zhenjiang:Jiangsu University,2016:30-36.李振.基于激光冲击的钛合金小孔构件残余应力分布及疲劳性能研究[D].镇江:江苏大学,2016:30-36.
[19] ZENG CHUNHUA,ZOU SHIJIAN.Fatigue analysis methods and applications[M].Beijing:National Defense Industry Press,1991:90-96.曾春华,邹十践.疲劳分析方法及应用[M].北京:国防工业出版社,1991:90-96.
[20] LIU PENG.Influence of ultrasonic strengthening on the property of different material[D].Shenyang:Shenyang Aerospace University,2016:66-72.刘鹏.超声强化对不同材料疲劳性能影响研究[D].沈阳:沈阳航空航天大学,2016:66-72.
[21] WANG PENGFEI.Numerical simulation of laser shock peening on fatigue crack growth of magnesium alloy joint[D].Dalian:Dalian University of Technology,2016:52-59.王朋飞.激光冲击镇合金接头疲劳裂纹扩展数值模拟[D].大连:大连理工大学,2016:52-59.
[22] ZHAO JIANSHEN.Fracture mechanics and fracture physics[M].Wuhan:Huazhong University of Science and Technology Press,2003:88-98.赵建生.断裂力学及断裂物理[M].武汉:华中科技大学出版社,2003:88-98.
[23] ZHOU GUOCAI,YAN WUZHU,YANG JINJIE,et al.Study on effect of shot peening materials on fatigue life of aluminum alloy[J].Hot Working Technology,2014,43(14):146-148.周国财,闫五柱,杨金杰,等.喷丸介质对喷丸铝合金疲劳寿命的影响研究[J].热加工工艺,2014,43(14):146-148.
[24] ZHANG X C,ZHANG Y K,LU J Z,et al.Improvement of fatigue life of Ti-6A1-4V alloy by laser shock peening[J].Materials Science and Engineering:A,2010(527):3411-3415.
[2] GAO YUKUI,JIANG CONGYING.Review and prospect on laser shock peening[J].Aeronautical Manufacturing Technology,2016(4):16-20.高玉魁,蒋聪盈.激光冲击强化研究现状与展望[J].航空制造技术,2016(4):16-20.
[3] SU CHUN,ZHOU JIANZHONG,MENG XIANKAI,et al.Research progress of temperature-assisted laser shock technology[J].Surface Technology,2006,45(10):121-128.苏纯,周建忠,孟宪凯,等.温度辅助的激光冲击技术研究进展[J].表面技术,2016,45(10):121-128.
[4] ZHOU JIANZHONG,FAN YUJIE,HUANG SHU,et al.Research and prospect on micro-scale laser shot peening[J].Chinese Journal of Lasers,2011,38(6):17-27.周建忠,樊玉杰,黄舒,等.激光微喷丸强化技术的研究与展望[J].中国激光,2011,38(6):17-27.
[5] HUANG YULONG,GU WEIWEI,LI BO,et al.Microstructure and thermal fatigue behavior of high speed steel for hot rolls[J].Shanghai Metals,2012,34(4):24-28.黄玉龙,顾卫伟,李博,等.轧辊用高速钢的组织特征及热疲劳性能[J].上海金属,2012,34(4):24-28.
[6] WU JIAN,ZHOU JIANZHONG,MENG XIANKAI.Effects of laser shock processing on surface properties of W6Mo5Cr4V2 high-speed steel[J].Surface Technology,2017,46(6):232-237.吴健,周建忠,孟宪凯.激光冲击强化对W6Mo5Cr4V2高速钢材料表面性能的影响[J].表面技术,2017,46(6):232-237.
[7] ZHANG JINXUE.The experimental study about laser surface strengthening of M2 high speed steel gear cutter[D].Hengyang:University of South China,2014:48-56.张金学.M2高速钢齿轮刀具激光表面强化的试验研究[D].衡阳:南华大学,2014:48-56.
[8] WU JIANG,CHENG XIUQUAN,XIA QINXIANG,et al.Experimental research on influence of restraint layer materials on surface strengthening of 7075 aluminum alloy laser shot peening[J].Surface Technology,2017,46(3):124-129.吴江,程秀全,夏琴香,等.约束层材料对7075铝合金激光喷丸表面强化的实验研究[J].表面技术,2017,46(3):124-129.
[9] REN XUDONG,ZHANG TIAN,ZHANG YONGKANG,et al.Improving fatigue properties of 00Cr12 alloy by laser shock processing[J].Chinese Journal of Lasers,2010,37(8):2111-2115.任旭东,张田,张永康,等.激光冲击处理提高00Cr12合金的疲劳性能[J].中国激光,2010,37(8):2111-2115.
[10] SUN YUANHUI,SUN YIAN.Effects of heat treatment process on microstructure and properties of high speed steel[J].Hot Working Technology,2011,40(18):156-159.孙元辉,孙易安.热处理工艺对高速钢组织性能的影响[J].热加工工艺,2011,40(18):156-159.
[11] DAI K,SHAW L.Analysis of fatigue resistance improvements via surface severe plastic deformation[J].International Journal of Fatigue,2008,30(8):1398-1408.
[12] AMAR H,VIGNAL V,KRAWIEC H,et al.Influence of the microstructure and laser shock processing (LSP) on the corrosion behaviour of the AA2050-T8 aluminium alloy [J].Corrosion Science,2011,53(10):3215-3221.
[13] ZHOU LEI,LI QIPENG,XUE DEZHI,et al.Measurement and analysis of hardness and residual stress for laser shock processing field of aluminum alloy LY2[J]Aviation Precision Manufacturing Technology,2010,46(1):43-45.周磊,李启鹏,薛德志,等.LY2铝合金的激光冲击强化区硬度和残余应力测试分析[J].航空精密制造技术,2010,46(1):43-45.
[14] HUANG XIAOBO,LIU HONGFEI,GAO YUKUI,et al.Distribution rule of residual stress field of zirconium alloy induced by shot peening[J].Surface Technology,2018,47(1):16-20.黄小波,柳鸿飞,高玉魁,等.喷丸处理的锆合金残余应力场分布规律[J].表面技术,2018,47(1):16-20.
[15] HILL M R,DEWALD A T,RANKIN J E,et al.Measurement of laser peening residual stresses[J].Materials Science and Technology,2005(21):3-9.
[16] KING A,STEUWER A,WOODWARD C,et al.Effects of fatigue and fretting on residual stresses introduced by laser shock peening[J].Materials Science and Engineering A,2006(435-436):12-18.
[17] ZHAO JIANFEI.Numerrical simulationon residual stress and fatigue crack growth by laser shot peening[D].Zhenjiang:Jiangsu University,2009:45-55.赵建飞.基于数值模拟的激光喷丸诱导残余应力场及其疲劳裂纹扩展特性研究[D].镇江:江苏大学,2009:45-55.
[18] LI ZHEN.Investigation of residual stress and fatigue performance of titanium alloy part with hole by laser shock processing[D].Zhenjiang:Jiangsu University,2016:30-36.李振.基于激光冲击的钛合金小孔构件残余应力分布及疲劳性能研究[D].镇江:江苏大学,2016:30-36.
[19] ZENG CHUNHUA,ZOU SHIJIAN.Fatigue analysis methods and applications[M].Beijing:National Defense Industry Press,1991:90-96.曾春华,邹十践.疲劳分析方法及应用[M].北京:国防工业出版社,1991:90-96.
[20] LIU PENG.Influence of ultrasonic strengthening on the property of different material[D].Shenyang:Shenyang Aerospace University,2016:66-72.刘鹏.超声强化对不同材料疲劳性能影响研究[D].沈阳:沈阳航空航天大学,2016:66-72.
[21] WANG PENGFEI.Numerical simulation of laser shock peening on fatigue crack growth of magnesium alloy joint[D].Dalian:Dalian University of Technology,2016:52-59.王朋飞.激光冲击镇合金接头疲劳裂纹扩展数值模拟[D].大连:大连理工大学,2016:52-59.
[22] ZHAO JIANSHEN.Fracture mechanics and fracture physics[M].Wuhan:Huazhong University of Science and Technology Press,2003:88-98.赵建生.断裂力学及断裂物理[M].武汉:华中科技大学出版社,2003:88-98.
[23] ZHOU GUOCAI,YAN WUZHU,YANG JINJIE,et al.Study on effect of shot peening materials on fatigue life of aluminum alloy[J].Hot Working Technology,2014,43(14):146-148.周国财,闫五柱,杨金杰,等.喷丸介质对喷丸铝合金疲劳寿命的影响研究[J].热加工工艺,2014,43(14):146-148.
[24] ZHANG X C,ZHANG Y K,LU J Z,et al.Improvement of fatigue life of Ti-6A1-4V alloy by laser shock peening[J].Materials Science and Engineering:A,2010(527):3411-3415.