On the relation between peening condition and fatigue strength.
On the relation between peening condition and fatigue strength.
复制标题
论喷丸条件与疲劳强度的关系.
DOI：
10.2493/jjspe1933.51.1569
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发表时间：
1985
影响因子：
--
通讯作者：
K. Tosha
中科院分区：
文献类型：
--
作者：
K. Iida;K. Tosha
为确定喷丸强化条件与疲劳强度的关系，进行了多次试验。对碳钢（0.45%C）进行喷丸强化处理。明确了表面残余应力、加工硬化层和表面粗糙度等因素对强化效果的影响。采用x射线衍射法测量表面残余应力。试验结果表明：(1)喷丸强化可使材料的疲劳强度提高30%。(2)弹丸动能越大，疲劳强度越大，但除薄型工件外，表面残余应力变化不大。(3)去除喷丸强化产生的表面粗糙度，强化对疲劳强度的影响增大。(4)强化对疲劳强度和寿命的最大影响分别为13%和820%。
Several experiments were run to determine the relations between shot peening conditions and fatigue strength. Shot peening was performed for carbon steel (0.45%C). The influences of the factors such as surface residual stress, work hardened layer and surface roughness on peening effect are cleared. Surface residual stress was measured by X-ray diffraction method. The results obtained from experiment are as follows : (1) Shot peening improves fatigue strength from thirty percent area coverage. (2) The more the kinetic energy of a shot, the more the fatigue strength neverthless surface residual stress does not so change, except for thin work- piece. (3) Removing the surface roughness produced by shot peening, the peening effect on the fatigue strength increases. (4) The maximum peening effect on the fatigue strength and life was about 13% and 820% respectively.