不同包套材料对钼粉末锻造中塑性变形和致密化的研究（英文）

发布时间：2018-01-29 10:29

本文关键词： 钼粉末包套锻造护套材料有限元法　出处：《稀有金属材料与工程》2017年11期 　论文类型：期刊论文

【摘要】：采用有限元法来研究钼粉末等温包套锻造中的塑性变形和致密化。采用3种包套材料来进行模拟:45钢、304不锈钢、和GH4169合金。模拟表明,应变、密度和平均应力的分布明显受护套材料影响,应力、密度分布呈现"U"型。并且再相同锻造条件下,坯料的应力和密度随包套材料所受应力的增加而增加。当变形程度超过40%时用304不锈钢材料做包套材料的坯料的均匀性最好。除了边缘的较小区域外,平均应力随着离中心的距离的增加而直线下降。研究表明,在这3种材料中,304不锈钢最适合做钼粉末等温包套锻造的包套材料。
[Abstract]:The plastic deformation and densification of molybdenum powder during isothermal cladding forging were studied by finite element method. The distribution of strain, density and average stress is obviously affected by the sheathed material. The distribution of stress and density is of "U" shape and under the same forging conditions. The stress and density of the billet increase with the increase of the stress of the cladding material. When the deformation degree is more than 40, the uniformity of the billet made of 304 stainless steel is the best, except for the smaller area of the edge. The average stress decreases linearly with the increase of the distance from the center.
【作者单位】：西北工业大学凝固技术国家重点实验室;
【分类号】：TG311
【正文快照】： Molybdenum has been taken seriously as a rare metal ofand deformation.They solve many problems,but also havestrategic significance,for its high strength,high Young’stheir limits[7].modulus,excellent conductivity,high melting temperatureA novel technolog

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