时效对Al—Li—Cu—Mg—Zr合金组织和性能的影响

研究了多种上时效热处理工艺对高强度模Ａｌ－Ｌｉ－Ｃｕ－Ｍｇ－Ｚｒ合金组织和性能的影响。结果表明，１４０℃和１６０℃时效比１９０℃时效的合金具有更好的综合力学性能；合适的双级时效不仅使合金时效峰值提前，而且能改善合金的强塑性；应变时效可以加速合金的时效动力学，并显著提高合金强度；合金固溶处理后，在人工时效前的自然时效不宜超过一天。     

Ni—Mo—W型铸造镍基合金的组织及其耐蚀性的研究

本文研究了Ｎｉ－Ｍｏ－Ｗ型铸造镍基合金的组织及其耐蚀性能。该合金在３０￣６０％ＨＣｌ，６０℃苛刻条件下，与性能优良的Ｈａｓｔｅｌｌｏｙ Ｂ－２合金做了对比试验。着重研究了Ｗ对题述合金组织与耐蚀性能的影响。试验结果表明，适量的Ｗ可明显提高合金耐浓盐酸介质的均匀腐蚀性能，并使合金具有较好的电化学腐蚀性能和较高的抗点蚀性能。     

新型铸造高合金不锈钢ZHASS—2

研制了HCl＋AlCl3复合介质泵用铸造高合金不锈钢ZHASS－2（0．02C－18Cr－30Ni－10Mo－3Cu－2．5W）。试验结果表明，1150℃×2h水冷的新型铸造不锈钢在60℃，5％HCl＋25％AlCl3复合介质中具有良好的耐均匀腐蚀、晶间腐蚀和点腐蚀性能。且铸造性能良好。     

快速凝固粉末冶金Al—Si—Cu—Mg合金的组织和性能

本文详细论述了快速凝固Ａｌ－１８．６Ｓｉ－４．３４Ｃｕ－０．６６Ｍｇ合金的制备工艺，研究了这种高硅铝合金的力学性能与组织结构的关系，实验结果表明：快速凝固Ａｌ－Ｓｉ－Ｃｕ－Ｍｇ合金的强度，硬度和塑性明显提高，固溶时效处理后的室温拉伸强度高达４３０ＭＰａ。随着试验温度的升高，其拉伸强度下降，但在２００℃时σｂ能保持在３７０ＭＰａ。Ａｌ－Ｓｉ合金这样优良的高温热稳定性是一般常规高强铝合金难以达到的。     

Fc—C—Mo合金贝氏体相变特征和形貌

研究了高纯度Ｆｅ－０．０６４％Ｃ－１．８０％Ｍｏ和Ｆｅ－０．１９％Ｃ－１．８１％Ｍｏ合金在５５０－８５０℃恒温时的贝氏体转变。结果表明，转变是完全的。两种合金分别在６００℃和５８５℃左右恒温时，转变会出现暂时停滞的现象，而后恢复并加转变。两合金ＴＴＴ图均有一明显稳定，Ｔｂ温度上下铁素体形貌明显不同。在７００－８００℃恒温时，Ｍｏ２Ｃ碳化物平行于奥氏体晶粒界沉淀。     

铜—镍—铝—钛合金时效工艺的研究

对铜－镍－铝－钛合金的不同时效工艺进行了实验，通过测定合金试样的硬度，力学性能，冷弯性能和时效变形特性等，来考察分级时效工艺对该合金性能的影响，并从中确定出合金的最佳单级时效工艺：５００℃时效４ｈ，或冷变形５０％＋５００℃时效４ｈ；以及最佳分级时效工艺，６５０℃时效１５ｍｉｎ＋５００℃时效２ｈ，或６５０℃时效１５ｍｉｎ＋冷变形５０％＋５００℃时效２ｈ。     

Ti—2Cu合金简述

1化学成分与组织Ti－2Cu合金的化学成分见表1．表1Ti－2Cu合金的化学成分．％Ti－2Cu合金是一种合金元素含量低的二元合金．与纯钛相比其主要优点是高温强度稍有提高．然而这一优点只有在钓260℃下才能体现．在此温度下暴露时间过长就会产生过时效（α相中的化合物Ti2Cu发生聚集）．在790℃时,铜在α钛中可以溶解到2％左右．Ti－2Cu系合金是共晶型合金,在790℃发生β相共折分解,形成α＋金属间化合物Ti2Cu．在790℃以下铜的溶解度降低,当接近室温时,降到0．5％左右．因此,Ti－2Cu合金通常在退火后的α＋化合物的组织状态使用．…     

Nd—Fe—B永磁体的温度特性

几种典型的合金添加（取代）元素对Ｎｄ－Ｆｅ－Ｂ永磁体的耐温特性有一定的改善作用，把原三元合金永磁体只能在８０℃以下使用的范围扩大到２００℃以内。设计者可根据不同使用要求相应选择耐温１００℃、１２０℃、１５０℃、１８０℃、２００℃的合金永磁体。     

Cu—Nu—Fe—Mn合金表面形成富锰膜的研究

研究了Ｃｕ－３０Ｎｉ－１Ｆｅ－１Ｍｎ合金原始表面膜的形成机理及其与热处理制度的关系，选择了６５０℃进行光亮退火，可以使合金表面形成富锰原始表面膜。     

Cu—30Ni—0.6Be合金的研制

Ｃｕ－３０Ｎｉ－０．６Ｂｅ合金是一种新型的可热处理强化的高温弹性合金。在中频炉中用石墨坩埚熔炼，１０００℃锻造，１０００℃淬火，５００℃时效。经热处理后的力学性能可达到：σｂ＝８２３ＭＰａ，σ０．２＝５４９ＭＰａ，Ｅ＝１５０ＧＰａ，δ＝２４％。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.     

Seven Rare Earth Projects Involving Close to 3 Billion Yuan Investment Landed In the HighTech Zone

正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully.