攪拌摩擦加工IF鋼的組織性能
[Abstract]:The friction stir processing of DC04 cold rolled IF steel plate with 3 mm thickness was carried out, and the microstructure and mechanical properties of the machining area were studied. When the rotating speed is 950r 路min-1 and the machining speed is 60 mm 路min-1, a smooth and undefective machined surface can be obtained by forced cooling after machining. The average microhardness of the machining center is about 135.6, which is 1.4 times of that of the base metal, and the highest hardness of the surface fine grain layer is up to HV 312.8. The tensile strength of the fine grain layer and the transition layer is 50.9% and 47.6% higher than that of the base metal, respectively. the tensile fracture of the samples before and after processing shows the characteristics of microporous polymerization toughness fracture. Fine grain strengthening plays a major role in improving the tensile strength of materials.
【作者單位】: 西安建筑科技大學(xué)冶金工程學(xué)院;西部鈦業(yè)有限責(zé)任公司;
【基金】:國(guó)家自然科學(xué)基金聯(lián)合基金資助項(xiàng)目(U1360105)
【分類(lèi)號(hào)】:TG457.11
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