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TC4钛合金Y型材热挤压成形工艺优化及组织演变 被引量:1
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作者 李宝亮 拓雷锋 +3 位作者 李强 康喜唐 桂海莲 楚志兵 《塑性工程学报》 CAS CSCD 北大核心 2024年第3期17-24,共8页
采用控制单一变量法设计型材挤压试验,通过DEFORM-3D有限元软件模拟分析不同挤压模角、挤压温度和挤压速度对热挤压成形过程中金属流动、等效应力、等效应变及最大挤压力的影响。模拟结果表明,当选择挤压模角45°、挤压温度1050℃... 采用控制单一变量法设计型材挤压试验,通过DEFORM-3D有限元软件模拟分析不同挤压模角、挤压温度和挤压速度对热挤压成形过程中金属流动、等效应力、等效应变及最大挤压力的影响。模拟结果表明,当选择挤压模角45°、挤压温度1050℃和挤压速度120mm·s^(-1)时,TC4钛合金Y型材挤压变形过程中的挤压力最小且产品表面质量最好。基于模拟结果,对钛合金Y型材进行挤压工艺试验并观察挤出产品的金相组织。试验结果表明,在挤压模角、温度和速度选择合理的情况下,可以挤出表面、平直度、尺寸等合格质量的TC4钛合金Y型材且挤压后微观组织得到了细化。 展开更多
关键词 钛合金 y型材 挤压变形 晶粒细化
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Hydrothermal Synthesis and Properties of Y-zeolite-containing Composite Material with Micro/mesoporous Structure 被引量:3
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作者 Zhou Jihong Min Enze +3 位作者 Shu Xingtian Zong Baoning Yang Haiying Luo Yibin (State Key Laboratory of Catalytic Material and Reaction Engineering,Research Institute of Petroleum Processing,SINOPEC,Beijing 100083) 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2010年第1期1-4,共4页
A Y-zeolite-containing composite material with micro/mesoporous structure had been synthesized from kaolin by means of the in-situ crystallization method. The obtained samples were investigated by XRD and BET methods.... A Y-zeolite-containing composite material with micro/mesoporous structure had been synthesized from kaolin by means of the in-situ crystallization method. The obtained samples were investigated by XRD and BET methods. Evaluation of catalytic activity of both the commercial Y-zeolite and the novel Y-zeolite-containing composite material was carried out in the pulse micro-chromatography platform with two probe molecules of different molecular sizes: VGO feedstock and 1,3,5 tri-isopropyl benzene. It was found that the Y-zeolite-containing composite material was richer in external surface and meso-/macro-pores; the Y-zeolite-containing composite material demonstrated a smaller rate of deactivation compared to the commercial Y-zeolite. 展开更多
关键词 FAUJASITE hydrothermal synthesis y-zeolite-containing composite material micro/mesoporous structure kaolin
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