超声波冲击处理对S355J2W+N钢对接接头焊后残余应力的影响
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摘要
基于X射线衍射法,测试了厚12 mm的S355J2W+N钢对接焊接接头试板不同覆盖率超声波冲击处理前后表面及电解抛光后不同层深的残余应力状态。研究了不同覆盖率对试板横向、纵向残余应力及其不同层深处残余应力分布的影响规律。结果表明,经100%覆盖率超声波冲击处理后,对接接头表面的横向和纵向残余压应力都高达500 MPa;冲击区域由残余拉应力转变为残余压应力;随着覆盖率的增加,残余应力分布趋于均匀;经对权衡超声波冲击效果与时间、经济效益后,得知400%覆盖率为最合理的超声波冲击处理工艺参数。
On the basis of X-ray diffraction method, the residual stress state of the surface of 12 mm thick S355 J2 W+N steel butt joint was tested after ultrasonic shock treatment, and the residual stress state of different layer depth after electrolytic polishing was measured. The influence of different coverage on the residual stress distribution in the depth of different layers was studied. The results showed that the surface residual compressive stress was up to500 MPa after ultrasonic shock treatment with 100% coverage. The impact area changed from residual tensile stress to residual compressive stress. With the increase of coverage, residual stress distribution became increasingly uniform.Considering the ultrasonic impact effect, efficiency and economic benefits, the 400% coverage was the most reasonable process parameter of ultrasonic impact treatment.
On the basis of X-ray diffraction method, the residual stress state of the surface of 12 mm thick S355 J2 W+N steel butt joint was tested after ultrasonic shock treatment, and the residual stress state of different layer depth after electrolytic polishing was measured. The influence of different coverage on the residual stress distribution in the depth of different layers was studied. The results showed that the surface residual compressive stress was up to500 MPa after ultrasonic shock treatment with 100% coverage. The impact area changed from residual tensile stress to residual compressive stress. With the increase of coverage, residual stress distribution became increasingly uniform.Considering the ultrasonic impact effect, efficiency and economic benefits, the 400% coverage was the most reasonable process parameter of ultrasonic impact treatment.
引文
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[12]何柏林,雷思涌.超声冲击对焊接残余应力影响的研究进展[J].兵器材料科学与工程,2015(2):120-123.
[13]谢国福,罗英,杨敏.超声波冲击处理对304L不锈钢焊接残余应力的影响[J].热加工工艺,2016(3):31-34.
[14]饶德林,陈立功,倪纯珍,等.超声冲击对焊接结构残余应力的影响[J].焊接学报,2005,26(4):48-50.
[15]郑卜祥,宋永伦,席峰,等.对接焊铝合金板材残余应力的X射线测试[J].机械工程学报,2009,45(3):275-281.
[16]杨新俊,凌祥,周建新.超声冲击改善S30403不锈钢表面状态的数值模拟[J].南京工业大学学报:自然科学版,2014,36(2):28-34.
[2]胡文浩,王广英,杨鑫华.高速动车组转向架构架焊接残余应力研究(三)[J].焊接技术,2018,47(3):19-22.
[3]马刚.超声冲击强化焊接接头抗应力腐蚀性能研究[D].江苏南京:南京工业大学,2010.
[4]何柏林,于影霞,余皇皇,等.超声冲击对转向架焊接十字接头表层组织及疲劳性能的影响[J].焊接学报,2013,34(8):51-54.
[5]朱有利,王燕礼,边飞龙,等.金属材料超声表面强化技术的研究与应用进展[J].机械工程学报,2014,50(20):35-45.
[6]李占明,朱有利,黄元林,等.超声波冲击处理对2A12铝合金焊接接头力学性能的影响[J].材料热处理学报,2010,31(7):104-108.
[7]张倩,陈东高,王克鸿,等.超声冲击对7A52铝合金焊接接头力学性能的影响[J].兵器材料科学与工程,2011,34(2):67-69.
[8]汪勇,魏敏,宋占永,等.金属材料的超声冲击残余应力研究[J].中国表面工程,2011,24(2):80-82.
[9]Desiraju G R.Crystal engineering:solid state supramolecular synthesis[J].Current Opinion in Solid State&Materials Science,1997,2(4):451-454.
[10]Sharma C V K.Crystal Engineering:Functionality and Aesthetics[M].Crystal Engineering:From Molecules and Crystals to Materials.Springer Netherlands,1999.
[11]Steiner T,Desiraju G R.Distinction between the weak hydrogen bond and the van der Waals interaction[J].Chemical Communications,1998,8(8):891-892.
[12]何柏林,雷思涌.超声冲击对焊接残余应力影响的研究进展[J].兵器材料科学与工程,2015(2):120-123.
[13]谢国福,罗英,杨敏.超声波冲击处理对304L不锈钢焊接残余应力的影响[J].热加工工艺,2016(3):31-34.
[14]饶德林,陈立功,倪纯珍,等.超声冲击对焊接结构残余应力的影响[J].焊接学报,2005,26(4):48-50.
[15]郑卜祥,宋永伦,席峰,等.对接焊铝合金板材残余应力的X射线测试[J].机械工程学报,2009,45(3):275-281.
[16]杨新俊,凌祥,周建新.超声冲击改善S30403不锈钢表面状态的数值模拟[J].南京工业大学学报:自然科学版,2014,36(2):28-34.