不同喷丸强度下镍铝青铜的表面喷丸强化效果
Surface Strengthening Effect of Nickel-Aluminum Bronze Treated by Shot Peening at Different Intensities
摘 要
采用0.15，0.20，0.25 mm的喷丸强度对铸态镍铝青铜进行了表面喷丸强化处理，对比分析了喷丸前后镍铝青铜表层的残余应力、显微硬度、微观形貌及表面粗糙度，并计算了表层的亚晶尺寸和显微畸变。结果表明：随着喷丸强度的提高，镍铝青铜表面的残余压应力和加工硬化程度都逐渐增大；但喷丸强度过大时，表面粗糙度明显增大并伴随有显微裂纹产生，从而导致表层应力释放，使得残余压应力增大幅度下降，减弱了强化效果。
喷丸
残余应力
显微硬度
表面粗糙度
nickel-aluminum bronze
shot peening
residual stress
micro-hardness
surface roughness
Abstract
The cast nickel-aluminum bronze was shot peened at shot peening intensities of 0.15, 0.20, 0.25 mm. The surface residual stress, micro-hardness, micromorphology and surface roughness of the nickel-aluminum bronze before and after shot peening were analyzed and compared, and the domain size and micro-strain in the surface layer were calculated. The results show that with the increase of shot peening intensity,the compressive residual stress and the level of work-hardening of the nickel-aluminum bronze both increased grandually. The surface roughness increased obviously, accompanied by the increase of micro-cracks when the shot peening intensity was too large, thus leading to the surface stress relaxation and resulting in the decrease of strengthening effect.
中图分类号 TG146.1 DOI 10.11973/jxgccl201704004
所属栏目 试验研究
基金项目 国家重点基础研究发展计划项目（2014CB046701）
收稿日期 2015/12/17
修改稿日期 2016/12/20
网络出版日期
作者单位点击查看
备注熊谛(1992-),男,江西南昌人,硕士研究生.
引用该论文: XIONG Di,WANG Li-qiang,XU Xiao-yan,LÜ,Yu-ting,LÜ,Wei-jie. Surface Strengthening Effect of Nickel-Aluminum Bronze Treated by Shot Peening at Different Intensities[J]. Materials for mechancial engineering, 2017, 41(4): 15～19
熊谛,王立强,徐小严,吕玉廷,吕维洁. 不同喷丸强度下镍铝青铜的表面喷丸强化效果[J]. 机械工程材料, 2017, 41(4): 15～19
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参考文献
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【3】WHARTON J A, BARIK R C, KEAR G, et al. The corrosion of nickel-aluminium bronze in seawater [J]. Corrosion Science, 2005, 47(12): 3336-3367.
【4】王仁智. 喷丸强化工程在工业生产中的应用 [J]. 机械工程材料, 1987, 11(4): 54-58.
【5】王仁智. 表面喷丸强化技术 [J].表面工程,1991,1(1):36-48.
【6】温爱玲, 王生武, 杨军永, 等. 采用复合高能喷丸提高工业纯钛的疲劳性能 [J]. 机械工程材料, 2010, 34(1): 55-57.
【7】卢国鑫, 陆峰. 高强度喷丸对300M钢抗疲劳性能的影响 [J]. 机械工程材料, 2015, 39(1): 20-23.
【8】王强, 乔明杰, 张炜, 等. 喷丸对TC4钛合金残余压应力场及疲劳寿命的影响 [J]. 机械工程材料, 2012, 36(12): 53-57.
【9】FENG B X, MAO X N, YANG G J, et al. Residual stress field and thermal relaxation behavior of shot-peened TC4-DT titanium alloy [J]. Materials Science and Engineering A, 2009, 512(1): 105-108.
【10】FOSS B J, GRAY S, HARDY M C, et al. Analysis of shot-peening and residual stress relaxation in the nickel-based superalloy RR1000 [J]. Acta Materialia, 2013, 61(7): 2548-2559.
【11】XIE L C, JIANG C H, LU W J, et al. Investigation on the residual stress and microstructure of (TiB+TiC)/Ti-6Al-4V composite after shot peening[J]. Materials Science and Engineering A, 2011, 528(9): 3423-3427.
【12】CHILD D J, WEST G D, THOMSON R C. Assessment of surface hardening effects from shot peening on a Ni-based alloy using electron backscatter diffraction techniques[J]. Acta Materialia, 2011, 59(12): 4825-4834.
【13】CULPAN E A, ROSE G. Microstructural characterization of cast nickel aluminium bronze[J]. Journal of Materials Science, 1978, 13(8): 1647-1657.
【14】HASAN F, JAHANAFROOZ A, LORIMER G W, et al. The morphology, crystallography, and chemistry of phases in as-cast nickel-aluminum bronze[J]. Metallurgical Transactions A, 1982, 13(8): 1337-1345.
【15】JAHANAFROOZ A, HASAN F, LORIMER G W, et al. Microstructural development in complex nickel-aluminum bronzes[J]. Metallurgical Transactions A, 1983, 14(10): 1951-1956.
【16】FENG Q, JIANG C H, XU Z,et al. Effect of shot peening on the residual stress and microstructure of duplex stainless steel [J]. Surface and Coatings Technology, 2013, 226: 140-144.
【17】FENG Q, JIANG C H, XU Z. Surface layer investigation of duplex stainless steel S32205 after stress peening utilizing X-ray diffraction [J]. Materials & Design, 2013, 47: 68-73.
【18】WOHLFAHRT H. 喷丸处理和残余应力 [J]. 国外机车车辆工艺, 1985(4): 13-19.
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