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用穆斯堡尔谱,测出了碾压后的材料处于拉应力状态;碾压后材料原子核外电子云密度随碾压比而增加,证明碾压能有效地改善材料的不均匀性。
With Mossbauer spectroscopy, the rolled material was measured in the state of tensile stress. The density of electron cloud outside the nucleus after rolling increased with the rolling ratio, which proves that rolling can effectively improve the material inhomogeneity.