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Ta-2.5W合金晶粒细化工艺研究 李献民1,李林1,彭海健2,闫晓东2,李德富2 (1.宝钛集团有限公司研发中心,陕西,宝鸡,721014;2.北京有色金属研究总院有色金属加工工程研究中心,北京,100088) 摘要:通过分析合金的金相组织, 研究了变形程度,退火工艺和原始晶粒尺寸对Ta-2.5W合金晶粒大小的影响, 提出了Ta-2.5W合金晶粒细化措施: 原始晶粒尺寸对Ta-2.5W合...过控制原始晶粒尺寸,冷变形程度,退火温度等因素, 平均晶粒尺寸3~5 mm的Ta-2.5W合金铸态组织可以细化到20~40 μm. 关键词:Ta-2.5W合金; 晶粒细化; 变形及热处理工艺; 晶粒尺寸; [全文内容正在添加中] ......
Ta-2.5W合金再结晶退火工艺的研究 李献民1,吴献明2,李林1,任春燕1,闫晓东3,李德富3 (1.宝鸡有色金属加工厂,陕西,宝鸡,721014;2.北海粮油工业(天津;3.北京有色金属研究总院有色金属加工工程研究中心,北京,100088) 摘要:钽钨合金具有高密度,耐高温,强度高,化学稳定和加工性能好等特点, 是航空航天,化学,核工业,高温技术等领域不可缺少的重要材料, 具有很好的应用前景. 通过研究Ta-2.5W合金的金相组织和力学性能, 确定了Ta-2.5W合金的再结晶退火工艺: Ta-2.5W合金锻棒的再结晶退火工艺为1450 ℃×30 min真空退火;Ta-2.5W合金锻棒经过单道次86%的冷变形以后, 再结晶退火工艺为1400 ℃×30 min真空退火. 关键词:Ta-2.5W合金; 金相; 力学性能; 再结晶退火; [全文内容正在添加中] ......
, LI Z, WU Y C. Effects of grain size on the microstructure and texture of cold-rolled Ta-2.5W alloy [J]. Int Journal of Refractory Metals and Hard Materials, 2016, 58: 125–136. DOI: 10.1016/j... J. Cent. South Univ. (2018) 25: 1573-1581 DOI: https://doi.org/10.1007/s11771-018-3849-x Derivation and application of concentration formula of alloy genes of DO3-type in BCC alloy systems PENG......
JY Ultima2 ICP-OES光谱仪测定Ta-2.5W和Ta-10W中钨元素的分析方法研究郝文婷宁夏东方钽业股份有限公司西北稀有金属材料研究院宁夏有限公司国家钽铌特种材料工程技术研究中心摘 要:采用发射光谱仪建立发射光谱法测定Ta-2.5W和Ta-10W中钨含量的方法.使用高纯氢氧化钽基体的纯钨标准溶液制作工作曲线,钨的分析线为209.475 nm,方法的线性范围为1.25%~15.00%,加标回收率在93.0%~99.0%之间,测定结果的RSD值(n=11)小于0.8%.关键词:发射光谱法;钨;钽钨合金;......
硫酸蒸发器钽合金管断裂失效分析 王小华1,王景阳2,姜顽强2,王赢利2,王值林2,张怀洲2 (1.兰州石化公司,甘肃兰州,730060;2.兰州石油化工公司,甘肃兰州,730060) 摘要:苯胺装置的硫酸蒸发器材料为Ta-2.5W,其加热管使用6个月即发生断裂,对其断裂原因进行了分析.结果表明:该材料在现场介质中耐腐蚀性能极强,断裂原因不是应力腐蚀而是由于材料表面受到划伤,使得钽管承栽载荷的有效区域减少,强度下降而造成的. 关键词:蒸发器; Ta-2.5W合金; 电化学; 应力腐蚀; [全文内容正在添加中] ......
The Strengthening of Cu-15Ni-8Sn Alloy WANG Ming-Pu1,WANG Yan-hui1,HONG Bin1 (1.School of Material Science and Engineering, Central South University, Changsha China) 摘要:The microstructure, property and relation between them of Cu-15Ni-8Sn alloy are studied by means of TEM and the measurement of hardness. The results show that γ '' metastable phase strengthens alloy because of its ordering......
The Technological Improvements of Aluminum Alloy Coloring by Electrolysis LI Nai-jun1 (1.Teachers College, Shenyang University, Shenyang 110015, P. R. China) 摘要:The technological process of coloring golden-tawny on aluminum alloy by electrolysis was improved in this paper. The optimum composition of electrolyte was found, the conditions of deposition and anodic oxidation by electrolysis were......
Microstructure and Performances of Nanocrystalline Zinc-nickel Alloy Coatings LI Guang-yu1,NIU Li-yuan1,JIANG Zhong-hao1,LIAN Jian-she1 (1.The Key Lab of Automobile Materials, Ministry of Education, China, College of Materials Science and Engineering, Jilin University, Nanling Campus, Changchun, 130025, China) 摘要:Nanocrystalline zinc-nickel alloy coatings were deposited from an alkaline......
Alloy 20不锈钢薄板等离子弧焊接工艺研究赵斌,王宾宾,王小华中国船舶重工集团公司第七二五研究所摘 要:对Alloy 20不锈钢薄板进行了等离子弧焊接工艺试验研究.结果表明,采用等离子弧焊接方法,ERCr Ni Mo-3焊材及合理的焊接工艺参数,等离子弧焊接工艺可用于Alloy 20不锈钢薄板的焊接,焊接接头各项性能均能满足要求.关键词:Alloy 20;不锈钢薄板;等离子弧焊接;......
)Abstract:Stainless die with micro-groove and micro-hole have been designed and manufactured, which has been used to study superplastic microforming of 2091Al-Li alloy by means of superplastic forming... micro-rib specimen, behavior of material could be understood well.Key words:superplasticity; microforming; extrusion; 2091Al-Li alloy......