X-Ray Study on Deformation and Fracture of Solid. Improvement of Residual Stress on Material Surface by Water Jet Peening.
X-Ray Study on Deformation and Fracture of Solid. Improvement of Residual Stress on Material Surface by Water Jet Peening.
复制标题
固体变形和断裂的 X 射线研究。
DOI：
10.2472/jsms.45.734
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
E. Hayashi
中科院分区：
文献类型：
--
作者：
K. Enomoto;K. Hirano;M. Mochizuki;K. Kurosawa;H. Saito;E. Hayashi
当高压水喷射到水中时，会产生空化气泡。空泡溃灭产生的极高压喷丸效应使表面残余应力显著提高。这种技术被称为水射流喷丸（WJP）。水射流喷丸有望成为电厂各种部件应力腐蚀裂纹预防性维修的有效技术。通过对各种试样的水射流喷丸试验，评价了水射流喷丸的基本特性，并选择了改善残余应力的最佳条件。试验结果表明，水射流喷丸能显著地将焊接和磨削引起的残余拉应力转化为较高的残余压应力，并能有效地改善残余应力。水射流喷丸的残余压应力与水射流喷丸的残余压应力之间存在着明显的相关性。水射流喷丸的残余压防止应力腐蚀开裂。
Cavitation bubbles are generated when highly pressurized water is jetted in water. Surface residual stress is improved remarkably due to the peening effect of extremely high pressure caused by the collapse of cavitation bubbles. This technique is called water jet peening (WJP). WJP is expected to be an effective preventive maintenance technique for the stress corrosion cracking in various components of power plants.Various specimens are water jet peened to evaluate the fundamental characteristics of WJP and to select the most appropriate conditions for the residual stress improvement.The test results show that WJP markedly changes the tensile residual stress caused by welding and grinding into the high compressive residual stress and prevents the stress corrosion cracking.