喷射沉积快速凝固Al—Li合金的时效析出相

采用新型的喷射沉积技术制备了Ａｌ－３．８Ｌｉ－０．８Ｍｇ－０．４Ｃｕ－０．１３Ｚｒ（Ｎｏ．１）和Ａｌ－２．１５Ｌｉ－１．２８Ｃｕ－１．２６Ｍｇ－０．１Ｚｒ（Ｎｏ．２）合金，对合金在时效过程中的析出相进行了比较和分析，实验结果表明，喷射沉积快速凝固Ａｌ－Ｌｉ合金的δ相粒子与铸锭冶金法Ａｌ－Ｌｉ合金的δ粒子有较大差异，高Ｌｉ低Ｃｕ含量的Ｎｏ．１合金δ相的体积分数明显高于低Ｌｉ高Ｃｕ含量的Ｎｏ．２合金，     

喷射沉积Al-Si-Fe-Cu-Mg合金中的相组成

对喷射沉积快速凝固Ａｌ－Ｓｉ－Ｆｅ－Ｃｕ－Ｍｇ合金的相组成进行了分析。结果表明：合金中含有α－Ａｌ、β－Ｓｉ、δ（ＦｅＳｉ２Ａｌ４）、Ａｌ８Ｓｉ６Ｍｇ３Ｆｅ和β（Ｆｅ２Ｓｉ２Ａｌ９）等相;初晶硅相呈颗粒状,共晶硅相和δ（ＦｅＳｉ２Ａｌ４）呈细小的片状,Ａｌ８Ｓｉ６Ｍｇ３Ｆｅ相呈细小的颗粒状;经Ｔ６工艺热处理后,新析出Ａｌ２Ｃｕ相,Ａｌ８Ｓｉ６Ｍｇ３Ｆｅ相数量增加,少量δ（ＦｅＳｉ２Ａｌ４）转化为β（Ｆｅ２Ｓｉ２Ａｌ９）。     

快速凝固铝锂合金粉末特性对其挤压材组织和性能的影响

采用一种快速冷凝装置研制了Ａｌ－２．５Ｌｉ－１．６Ｃｕ－１．２Ｍｇ－０．２Ｚｒ合金粉末及合金。探讨了合金粉末特性及其对快速凝固铝锂合金微观组织和力学性能的影响。采用片状粉末制备的这种快速凝固铝锂合金，具有较好的强塑性综合力学性能。     

快速凝固粉末冶金Al－Li合金性能研究

采用快速凝固粉末冶金法（ＲＳ／ＰＭ）制备Ａｌ－Ｌｉ－Ｍｇ－Ｃｕ－Ｚｒ合金（合金经固溶时效处理）．测试了合金的拉伸性能，并借助于ＳＥＭ、ＴＥＭ探明了该合金的时效强化机理．     

B—Al球墨铸铁球化工艺研究

选用Ａｌ－Ｍｇ合金废料作为球化剂，研究了Ａｌ－Ｍｇ合金对铁水的球化效果。通过试验确定２．０￣２．１％Ａｌ－Ｍｇ（１０％Ｍｇ）合金能保证获得低硅球墨铸铁，球化效果良好。     

微量钐对银铜基合金再结晶的影响

研究了在银铜基合金中添加轻稀土元素钐对合金再结晶温度、再结晶激活能及再结晶速度的影响，并与添加重稀土元素钆的情况进行了比较。结果表明：在Ａｇ－Ｃｕ合金中添加０．２ｗｔ％Ｓｍ后，其再结晶温度比含铜量相同的Ａｇ－Ｃｕ和Ａｇ－Ｃｕ－０．２Ｇｄ合金均有大幅度提高；再结晶激活能高于相应的Ａｇ－Ｃｕ合金，但比Ａｇ－Ｃｕ－０．２Ｇｄ合金低；再结晶速度快于Ａｇ－Ｃｕ－０．２Ｇｄ合金且与Ａｇ－Ｃｕ合金相近。     

机械合金化Cu－5Cr合金的组织性能研究

研究了机械合金化制粉、热静液挤压致密制备的Ｃｕ－５Ｃｒ合金的组织与性能。机械合金化Ｃｕ－５Ｃｒ合金由于细晶强化和弥散强化的作用，具有很高的强度（σｂ≥７５０ＭＰａ），经热处理后，合金具有较高的延伸率（δ≥８％）和导电性（≥６０％ＩＡＣＳ）。材料晶粒达到０．１μｍ级，析出的Ｃｒ粒子达到纳米级。     

机械合金化Cu—5Cr合金的组织性能研究

研究了机械化金化制粉，热静液挤压致密制备的Ｃｕ－５Ｃｒ合金的组织与性能，机械合金化Ｃｕ－５Ｃｒ合金由于细晶强化和弥散强化的作用，具有很高的强度（σｂ≥７５０ＭＰａ）经热处理后，合金具有较高的延伸率（δ≥８％）和导电性（≥６０％ＩＡＣＳ）。材料晶粒达到０．１μｍ级，析出的Ｃｒ粒子的达到纳米级。     

快速凝固粉末冶金Al—Li合金性能研究

采用快速末冶金法（ＲＳ／ＰＭ）制备Ａｌ－Ｌｉ－Ｍｇ－Ｃｕ－Ｚｒ合金（合金经固溶时效处理）。测试了合金的拉伸性能，并借助于ＳＥＭ、ＴＥＭ探明了该合金的时效强化机理。     

IC-218合金液态轧制薄带中锆的分布

鉴于Ｚｒ含量对Ｎｉ３Ａｌ基合金高温性能的重要影响，对ＩＣ－２１８合金液态轧制薄带中Ｚｒ的分布进行了研究。结果表明，Ｚｒ在γ＇和γ两相中明显偏取于γ＇，在江带内部存在直径不到０．５μｍ的Ｎｉ７Ｚｒ２和ＺｒＣ颗粒，而在近表层区域存在直径可达１０～３０μｍ的ＺｒＡｌ３颗粒，薄带表面出现Ｚｒ富集，其浓度可达薄带内部的３．８倍。此外，结合液态轧制工艺的快冷条件对锆化合物颗粒及钎表面富集的可能机制进行了讨论。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

Shijiazhuang will Build the World's Biggest Replacingcopper-with-aluminum Cable Production Base

正Shijiazhuang City will build the world’s biggest replacing-copper-with-aluminum cable production base,the annual output value can reach 100 billion yuan,in the future it will develop replacing-copper-with-aluminum highend industry cluster.This piece of news was learned by the reporter at the Rare Earth highiron Aluminum Alloy[Nonferrous Business Opportunity:Aluminum alloy door]Cable Conductor New Technology Application Seminar held at the provincial capital.     

Chongqing is Preparing to Set Up Nonferrous Metal Exchange,in a Bid to Become the Transit Place of Kazakhstan Copper

正Since the beginning of Chongqing’s upgrading to a municipality directly under the Central Government,Chongqing City has established direct friendly relationship with Almaty,Kazakhstan,and carried out a series of cooperation in commerce and trade,and culture     

Guangxi Baise Extends Industrial Chain to Combat Loss in Aluminum Business

正"For each tonne of aluminum being produced,the upstream enterprise on the aluminum industrial chain will suffer loss about 2000yuan."Said Liang Xiao,Deputy Director of Pingguo Industrial Park Management Committee under the Guangxi Baise City,one of the four major aluminum industry bases in China,on August 11.Extending aluminum     

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL ANNUAL CONTENTS Volume 21(2014)

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Chinalco Straightened Out Copper Assets,and Delegated Stock Equity of Yunnan Copper

正Immediately after the news that Chinalco transferred 58%stock equity of Yunnan Copper Group to its wholly-owned subsidiary China Copper Corporation Limited free of charge was disclosed on July 9,many individual investors couldn’t help but to think:Does it mean China Copper Corporation Limited will assemble assets for overall listing?At present,among main copper business companies under China Copper Corporation     

The Development and Reform Commission Encourages Private Capital to Enter Geological Prospecting Field

正At the press conference recently held by the National Development and Reform Commission under the theme"Deepen Reform in Investment AuditApproval System",when answering questions from reporters,Huang Min,Director of the Department of Fixed Assets Investment of the National Development and Reform Commission,said that in the future it would continue to intensify efforts in geological prospecting,and actively guide social capital to enter this field.     

Guangxi's first Nickel Industry Development Research Report Was Released

正Recently,Guangxi Metallurgical Research Institute,a subsidiary of Guangxi Nonferrous Metals Group,completed survey on laterite and related manufacturers in the region,by combining the current development status of laterite both at home and abroad,it compiled Guangxi’s first"Research Report on the Development of Guangxi Nickel Industrial Chain"which adopted laterite as the study subject.This report expounded on the current     

China’s Major Non-ferrous Metals Imports & Exports(End of September. 2014)

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China's Major Non-ferrous Metals Imports & Exports

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