本文關(guān)鍵詞： 鉬粉末 包套鍛造 護套材料 有限元法　出處：《稀有金屬材料與工程》2017年11期 　論文類型：期刊論文

【摘要】：采用有限元法來研究鉬粉末等溫包套鍛造中的塑性變形和致密化。采用3種包套材料來進(jìn)行模擬:45鋼、304不銹鋼、和GH4169合金。模擬表明,應(yīng)變、密度和平均應(yīng)力的分布明顯受護套材料影響,應(yīng)力、密度分布呈現(xiàn)"U"型。并且再相同鍛造條件下,坯料的應(yīng)力和密度隨包套材料所受應(yīng)力的增加而增加。當(dāng)變形程度超過40%時用304不銹鋼材料做包套材料的坯料的均勻性最好。除了邊緣的較小區(qū)域外,平均應(yīng)力隨著離中心的距離的增加而直線下降。研究表明,在這3種材料中,304不銹鋼最適合做鉬粉末等溫包套鍛造的包套材料。
[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.
【作者單位】： 西北工業(yè)大學(xué)凝固技術(shù)國家重點實驗室;
【分類號】：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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