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在圆柱形试样部分熔融和凝固后,对含有诸如铜、锡和铅等残余元素的奥氏体不锈钢进行了热拉伸试验。采用良好的控制冷却条件使温度降至试验温度,从而在试样的试验区中获得径向凝固显微组织。此试验材料通过在真空感应炉中对工业生产的基体材料和添加的单一元素进行重熔制备而得。在液相和1100℃的温度范围内测定了其最大强度和断面收缩率。就二次加热和热轧工艺而言,有些试样在工业条件下已经进行了热处理。测定了温度降到950℃时的材料延性并评定了退火的影响。从所进行的这些试验提出了通过连铸和热轧进行材料加工的建议。
After the cylindrical specimen was partially melted and solidified, the hot tensile test was performed on austenitic stainless steel containing residual elements such as copper, tin and lead. With good controlled cooling conditions, the temperature was reduced to the test temperature to obtain a radial solidified microstructure in the test area of the test piece. The test material was prepared by remelting the industrially produced matrix material and the added single element in a vacuum induction furnace. The maximum strength and reduction of area were measured in the liquid phase and in the temperature range of 1100 ℃. For secondary heating and hot rolling processes, some samples have been heat treated under industrial conditions. The ductility of the material at 950 ° C was measured and the effect of annealing was assessed. From these experiments conducted, proposals for material processing by continuous casting and hot rolling were proposed.