铪在粉末冶金高温合金中的作用研究概况

结合铪在铸造高温合金以及变形高温合金中的作用,简要说明了在粉末冶金高温合金中添加铪的重要性,并重点概述了铪在粉末冶金高温合金中的作用及应用,最后探讨了加铪以提高粉末冶金高温合金性能的研究方向.     

第三代粉末冶金高温合金René104的研究进展

概述了粉末冶金高温合金的发展历程,并简要介绍了几个典型的第三代粉末冶金高温合金,重点讲述了第三代粉末冶金高温合金:René104的成形工艺、热处理工艺和经不同热处理得到的典型组织,以及René104的单合金双组织热处理工艺.     

金属包套与镍基粉末冶金高温合金之间连接区的研究

本文通过观察金属包套与粉末冶金高温合金之间连接区形貌,分析了在镍基粉末冶金高温合金毛坯表面发现明显原始颗粒形貌的原因,重点研究了不锈钢包套与镍基粉末冶金高温合金之间的连接区。结果表明:连接区内在不锈钢和粉末冶金高温合金之间存在明显的界面,界面两侧存在扩散层,距离界面最近的镍基高温合金粉末仍保持原始粉末颗粒形貌;毛坯表面发现原始颗粒形貌是靠近粉末冶金高温合金一侧的界面没有完全去除造成的;界面、界面附近粉末原始颗粒形貌的形成与C扩散及镍基高温合金粉末元素偏析有关,连接区Ⅰ厚度不小于167μm,连接区Ⅱ厚度不小于716μm。     

夹杂物对粉末冶金高温合金力学性能的影响

综述了非金属夹杂物对粉末冶金镍基高温合金力学性能影响的研究现状,特别着重夹杂物尺寸、位置、形态、数量等对粉末冶金镍基高温合金低周疲劳寿命(LCF)的影响。文中提出粉末冶金高温合金存在的问题及今后的研究方向。     

夹杂物对粉末冶金高温合金学性能的影响

综述了非金属夹杂物对粉末冶金镍基高温合金力学性能影响的研究现状，特别着重夹杂物尺寸、位置、形态、数量等对粉末冶金镍基高温合金低周疲劳寿命（LCF）的影响影响。文中提出粉末冶金高温合金存在的问题及今后的研究方向。     

粉末冶金结构材料在航空工业中的应用

简要介绍快速凝固粉末冶金材料的研究和发展状况,偏重于航空发动机用粉末冶金,高温合金和机体结构用轻金属合金,以及粉末冶金零件在燃气涡轮发动机和飞机中的应用。     

专利信息

一种镍铬稀土粉末冶金高温合金及其应用本发明涉及一种镍铬稀土粉末冶金高温合金,其质量组成为:镍19%~22%、铬24%~27%、铌0.8%~     

20世纪中、后期的粉末冶金新技术和新材料(1)——新工艺开发的回顾

介绍了20世纪中、后期开发的一些粉末冶金新工艺的历史沿革和发展现状，包括粉末锻造、热等静压、快速凝固、燃烧合成、喷射成形、机械合金化、粉末注射成形等。由这些新工艺创造出来的一系列粉末冶金新材料，包括粉末冶金高速钢、稀土永磁材料、粉末冶金高温合金、粉末冶金高强度铝合金、纳米粉末材料和非晶态合金粉末材料等，将在下期连续刊出。     

钼合金粉末冶金研究进展

钼及其合金具有优异的高温力学性能，被广泛应用于冶金、机械、化工、航空和核工业等领域。粉末冶金是钼合金的主要制备方法。通过固溶强化、第二相强化、细晶强化等多种强化手段可以提高钼合金的力学性能，从而拓宽钼合金的应用范围。本文介绍了粉末冶金制备钼合金的研究进展，包括粉体制备方法、压制工艺及坯体烧结工艺等，讨论了钼合金的强韧化方法及其机理，并展望了粉末冶金法制备钼合金的发展方向，以期对钼合金的设计和制备提供一些思路。     

铸造高温合金的热等静压致密化机理

本文研究了铸造高温合金的热等静压致密化机理,综合应用高温合金的蠕变理论和粉末冶金的烧结理论,导出了以γ′沉淀相强化的铸造高温合金的热等静压致密化速率与热等静压工艺参数的解析表达式。在K18铸造高温合金上进行的不同温度、压力和时间的热等静压实验表明,实验值与理论值符合良好。     

Chinalco Signed Framework Agreement for Strategic Cooperation with Harbin Municipal Government

正Last month,Chinalco signed framework agreement for strategic cooperation with Harbin Municipal Government in Harbin Xiong Weiping,Chairman of Chinalco,said that based on the strategic deployment to build world top-class mining company with the highest growth potential,Chinalco was now concentrating all efforts on making strategic transition and structural adjustment,strategic cooperation with the local governments where     

Jiangxi Promotes Jiangxi Copper Corporation To Become The World's Most Competitive Mining Company

<正>According to the latest info from Jiangxi Province State-owned Assets Supervision and Administration Commission,Jiangxi Copper Corporation was approved to become the first pilot enterprise for deepening reform.Contents of the pilot work is"Three Self"(self expansion,self decision-making,self     

Journal of Rare Earths Contents List of Vol.32(2014)

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Contributions to Baosteel Technical Research wanted

正Baosteel Technical Research,a quarterly journal,which is issued domestically and abroad,is run and sponsored by Baosteel Group Corporation.Baosteel Technical Research mainly reports the achievements in technological innovation,academic research,new product development and industrial equipment improvement by Baosteel.It will continue to follow up on hot topics and serve the company’s technological development and progress.Its readers include experts in     

Ministry of Industry and Information Technology: No Short Term Solution For Our Country’s Excess Nonferrous Metal Smelting Capacity

【正】According to the Ministry of Industry and Information Technology,the Ministry has released the 2013 Operation Report on China’s Industrial Communication Indu...     

Chinalco Signed Framework Agreement for Strategic Cooperation with Gansu Province

正Recently,Chinalco and Gansu Provincial People’s Government signed"Framework Agreement for Strategic Cooperation on Reform,Restructuring and Transition Development of Chinalco’s Electrolytic Aluminum Enterprises in Gansu",signifying that the strategic cooperation between Chinalco and Gansu Province had made new substantive progress.     

Unavoidable Economic Cycle:30% Of Nonferrous Metal Companies Were Involved In Restructuring

正Owing to continual downturn in real estate and bulk commodity markets,a number of traditional industries in China suffered unfavorable impact in performance.With the progressive disclosure of third quarter report,the no-pleasant-surprise performance of     

Baotou Rare Earth Became the World's Biggest High Performance Magnetic Material Base

正The High Performance Magnetic Material Phase II Project,an industry upgrading project implemented by Inner Mongolia Baotou IronSteel Rare Earth(Group)Hi-tech Co.,Ltd,recently basically finished equipment commissioning,signifying that the enterprise had developed the production capacity of15000 t/a Nd-Fe-B strip casting alloy and 5000t/a Nd-Fe-B magnet,thus becoming the world’s     

Introducing Two Central Enterprises to Integrate Rare Earth Industry,Shandong Rare Earth Group Breaks Surface

正With the signing of"Letter of intention for Propelling Integration of Shandong Rare Earth Enterprises"between Shandong Province Commission Of Economy and Informatization,China IronSteel Research Institute Group("China Steel Institute"),and China Rare MetalsRare Earth Co.,Ltd("China Rare Earth"),the"Shandong Rare Earth Group"jointly set up by the 3 units thus broke surface.On August 9,reporters of the China Economic Herald learned from Shandong Province     

Aluminium Production by Province or City in 2014

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