陈玉娟,布紫叶,靳军胜.喷丸结合振动光整加工工艺对钛合金疲劳性能的影响[J].表面技术,2016,45(11):62-66.
CHEN Yu-juan,BU Zi-ye,JIN Jun-sheng.Influence of Shot Peening Combined with Vibration Finishing on Fatigue Performance of TC4 Titanium Alloy[J].Surface Technology,2016,45(11):62-66
喷丸结合振动光整加工工艺对钛合金疲劳性能的影响
Influence of Shot Peening Combined with Vibration Finishing on Fatigue Performance of TC4 Titanium Alloy
投稿时间:2016-03-22  修订日期:2016-11-20
DOI:10.16490/j.cnki.issn.1001-3660.2016.11.009
中文关键词:  喷丸  TC4 钛合金  振动光整加工  表面粗糙度  残余应力  疲劳强度
英文关键词:shot peening  TC4 titanium alloy  vibration surface finishing  surface roughness  residual stress  fatigue strength
基金项目:
作者单位
陈玉娟 河北科技学院,河北 保定 071000 
布紫叶 河北科技学院,河北 保定 071000 
靳军胜 河北科技学院,河北 保定 071000 
AuthorInstitution
CHEN Yu-juan Hebei College of Science and Technology, Baoding 071000, China 
BU Zi-ye Hebei College of Science and Technology, Baoding 071000, China 
JIN Jun-sheng Hebei College of Science and Technology, Baoding 071000, China 
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中文摘要:
      目的 提高钛合金的疲劳性能。 方法 采用喷丸结合振动光整加工工艺对 TC4 钛合金进行了表面加工处理。对未加工试样、经过喷丸处理后的试样和经过喷丸与振动光整加工工艺处理后的试样,分别进行了表面粗糙度、表面层残余应力测试,并对三种状态下的试样进行了旋转弯曲疲劳试验。对比了不同工艺处理后试样的表面粗糙度、表层残余应力及疲劳强度。 结果 与喷丸工艺相比,采用喷丸结合振动光整加工工艺对试样进行处理后, 试样的表面残余压应力值提高了 39 MPa, 残余压应力峰值、残余压应力层的厚度略有降低。喷丸结合振动光整加工工艺在不明显改变试样残余压应力场的条件下,使试样的表面粗糙度得到大幅降低。疲劳试验结果表明,喷丸工艺使 TC4 钛合金的疲劳强度提高了16.3%,喷丸结合振动光整加工工艺使 TC4 的疲劳强度提高了 23.8%,比喷丸后 TC4 钛合金的疲劳强度高出 7.5%。 结论 在喷丸工艺的基础上,喷丸结合振动光整加工工艺通过改善 TC4 钛合金的表面完整性,使 TC4 钛合金的疲劳强度得到进一步提高。
英文摘要:
      The work aims to improve the fatigue performance of titanium alloy. Process of shot peening combined with vibratory finishing was used for surface treatment of TC4 titanium alloy. The surface roughness and residual stress of the surface layer were tested repectively for raw specimen, specimen subject to shot blasting as well as that subject to shot blasting and vibratory finshing. The rotating bending fatigue test was conducted for the specimens under the three conditions. The surface roughness, residual stress and fatigue strength were compared for specimens subject to different treatment. Compared with single shot peening process, the surface residual compressive stress value increased by 39 MPa after shot peening combined with vibratory surface finishing while peak value and layer thickness of the compressive residual stress reduced slightly. The test results showed that the shot peening combined with vibratory surface finishing could greatly reduced the surface roughness of the specimen without changing the residual compressive stress field obvioulsly. The fatigue test results indicated that fatigue strength of TC4 titanium alloy increased by 16.3% after shot peening and by 23.8% after shot peening combined with vibratory surface finishing, which was 7.5% higher than that subject to shot peening. On the basis of shot peeningprocess, shot peening combined with vibratory finishing further improves the fatigue strength of TC4 titanium alloy by improving the surface integrity.
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