超深冲无间隙原子钢的织构与成形性

采用织构ＯＤＦ分析、金相等方法对复合添加Ｔｉ，Ｎｂ的超深冲无间隙原子钢在各主要不同工艺阶段的微观结构、织构特征进行了研究；在此基础上探讨了板材成形性的影响因素，钢中合金元素Ｔｉ，Ｎｂ的作用，织构的形成与演变等问题。结果表明，①试验钢在实验室条件下获得了优良的成形性，其指标为：ｒ＝２．４～２．６，ｎ＝０．３２～０．３３，△ｒ＝０．０４～０．２２。严格控制化学成分和合理选择工艺参数、促进强的γ－＜１１１＞／／Ｎ．Ｄ　纤维织构形成是获得优异成形性的关键；②实验证实，Ｔｉ，Ｎｂ与Ｃ，Ｎ形成的第二相粒子在热轧阶段析出属＂前析型＂析出。它通过细化热轧组织晶粒，推迟退火再结晶和晶粒长大，抑制退火时不利织构形成，促进有利织构的发展，从而提高ｒ值并改善平面各向异性；③ＩＦ钢的冷轧退火织构与普通低碳深冲钢明显不同。冷轧织构为α－＜１１０＞／／Ｒ．Ｄ　纤维织构，强点位于｛１１２｝＜１１０＞，连续退火织构由强烈的γ－＜１１１＞／／Ｎ　．Ｄ　纤维织构组成，强点位于｛１１１｝＜１１２＞和｛５５４｝＜２２５＞。文中分析了热轧、冷轧、退火织构的形成及演变过程。此外，还讨论了退火再结晶织构的形成机制。     

IF钢的第二相对织构转变的影响

本文用Ｘ射线衍射的ＯＤＦ分析和电子显微分析技术对ＩＦ钢中析出相对织构转变的影响进行了分析研究。结果表明，热轧过程中织构的形成与奥氏体（１１１），和（１１０）以向以及平行轧面的晶粒晶面的相对畸变大小有关，同时受动态再结晶作用，冷轧过程中由于析出相对（１１０）（１１１）和（１１２）（１１１）滑移系开动的影响不同，则对种种轧制织构转变民不同；在退火过程中，退火织构的形成受随机取向晶粒中析出相和冷轧织构晶     

IC—218合金的冷轧织构的退火织构

本文用极图和取向分布函数研究了ＩＣ－２１８合金（一种含共格γ相的Ｎｉ３Ａｌ（Ｂ）－Ｃｒ基合金）冷轧６０％后和１０００℃退火后的织构。实验结果表明，冷轧织构为｛１１０｝＜１１２＞＋｛１１２｝＜１１１＞，属纯铜式织构。在退火中，冷轧织构逐渐被消除，其中｛１１２｝＜１１１＞消失较快，代之以十分漫散的取向分布，并相继形成几种弱的再结晶织构：｛１，１０，７｝＜３１１＞，｛６１１｝＜０１１＞和｛１２３｝＜２１     

超深冲IF钢退火过程中织构变化的ODF分析

采用ＯＤＦ分析方法对ＩＦ钢冷轧板在退火过程中织构变化进行了分析。结果表明，随退火时间的延长，冷轧ＩＦ钢板在呔α，γ取向线上的｛１００｝〈１１０〉，｛１１２｝〈１１０〉，｛１１１｝〈１１０〉，｛１１１｝〈１１２〉织构有所增减，其中｛１１１｝〈１１２〉织构明显增加。最终形成以｛１１１｝〈１１０〉，｛１１１｝〈１１２〉为主的退火织构。这正是使ＩＦ钢获得优良深冲性能必要条件。     

超低碳高强度烘烤硬化钢织构与性能

研制了含铌加磷超低碳高强度烘烤硬化钢，它具有优良的力学性能和基本成形性，高的烘烤硬化值。采用ＯＤＦ织构分析技术研究了冷轧变形织构和退火过程（回复，再结晶和晶粒长大）再结晶织构的演变。讨论了再结晶织构γ－〈１１１〉／／Ｎ，Ｄ形成机理。     

高纯超低碳08Al深冲钢板的固溶碳含量对冷轧｛111｝纤维织构的影响

用三维取向分布函数探讨了高纯度超低碳０８Ａｌ深冲钢板的固溶碳含量对冷轧｛１１１｝纤维织构的影响，分析了｛１１１｝〈１１２〉和｛１１１｝〈１１０〉织构类型的织构度随碳含量及压下量的变化规律。结果发现，｛１１１｝纤维织构的极密度随碳含量的降低和压下量的增大而增强；Ｉ｛１１１｝〈１１２〉／Ｉ｛１１１｝〈１１０〉随碳含量的增多而减弱。     

具有极高r值的ELC—BH钢板的研究

用三维取向分布函数对用新工艺研制的ＢＬＣ－ＢＨ钢板具有极高ｒ值的原因进行了织分析，表明：（１）新工艺的核心是通过织构控制提供一个有利于「１１１」退火织构发展的冷轧母体；（２）新工艺得到的冷轧织和退火织构与传统工比明显不同，冷轧织构具有较强的「１１１」组分，退火织构的「１１１」组分密度提高且取向密度峰值对应的晶体学取向也由传统工艺的「１１１」、「１１２」变为新工艺的「１１１」「０１１」．     

Zr－4板材的织构强化

用晶体取向分布函数（ＯＤＦ）研究了Ｚｒ－４合金冷轧板的退火织构。详细分析了不同退火条件下，板材取向分布函数的特征以及织构强化机制。结果表明，冷轧变形６５％，经５４０℃／２ｈ退火，可以显著提高Ｚｒ－４合金板的织构强化效果。     

武钢微碳深冲钢板的织构特征与成型性

用三维取向分布函数（ＯＤＦ）分析技术研究了武钢微碳深冲钢板（０３Ａｌ０在工业生产各主要工序中的织构特征与演变，力学性能和成型性能，结果表明：（１）热轧，冷轧与退火织构类型与铝镇静深冲钢板（０８Ａｌ）相类似，但冷轧和退火后，有利织构明显增强；）２）武钢通过对碳含量在０．０１％～０．０２％的微碳深冲钢板进行成分设定和选定工艺参数，可生产出基本成型性能ｎ＝０．１９３～０．２４１，ｒ＝１．６８４～１．９３     

无间隙原子钢的微观结构特征和塑性应变比

采用Ｘ射线衍射的ＯＤＦ和ＬＰ分析技术，ＳＥＭ电子通道花样和蚀坑技术观测，研究了超深冲无间隙原子钢板的微观结构特征。结果表明：控制化学成分、保证基体纯净、优选工艺参数，促进强的γ－〈１１１〉∥Ｎ．Ｄ纤维织构的形成是获得优异成型性的关键。用ＣＭＴＰ方法，由ＯＤＦ织构数据从理论计算了塑性应变比（ｒ），表明ｒｍ值高达３．１８。文中讨论了再结晶织构形成机制。     

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。     

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.