Experimental and numerical studies of nonlinear ultrasonic responses on plastic deformation in weld joints

Xiang Yan-Xun¹, Zhu Wu-Jun¹, Deng Ming-Xi², Xuan Fu-Zhen^{1, †,}

TEM micrographs of 30Cr2Ni4MoV weld joint specimens with different plastic strain levels: (a) virginal specimen; (b) 1.14% plastic strain; (c) 1.73% plastic strain, and (d) 3.89% plastic strain.^[3]