钻杆管端加厚工艺中热脆性问题的分析

用高温拉伸试验方法研究对比了宝钢（ＢＳ）和日本钢管（ＮＫＫ）Ｇ级钻杆的高温力学行为，分析了断裂组织和晶粒，对比了ＢＳ和ＮＫＫ两种钻杆成分设计思想。文中指出：同样在１２００℃左右热成型时Ｃｒ－Ｍｏ钢比Ｍｎ－Ｍｏ钢表面出更大的热脆敏感性。     

铸造工艺参数和细化剂对K4169高温合金铸态组织的影响晶粒组织及晶粒细化机理

研究了K4169高温合金在各种工艺条件下及向熔体中加入复合细化剂时的晶粒组织．结果表明．降低浇注温度和加入复合细化剂可以明显细化冷凝后基体的晶粒和提高铸件断面等轴晶的比例。在通常的浇注温度1400℃下加入复合细化济．对合金熔体进行或不进行过热处理时．可使圆柱锭的品粒分别细化至ASTM11.7级和ASTM3．2级：断面等轴晶的比例分别达96％和99％以上．当浇注温度为1420℃，加入复合细化利并对合金熔体进行过热处理时，可使圆住锭晶粒细化至ASTMM10．5级，断面等轴晶的比例达90％以上，提出了晶粒细化的机理并对晶粒细化后断面等轴晶比例增大的现象进行了分析。     

铸型搅动细晶铸造真空炉的研制

北京航空材料研究院研究制造了我国第一台铸型搅动工艺细晶铸造真空炉。在该细晶铸造真空炉上，可用铸型搅动法浇注整体细晶涡轮，其晶粒尺寸为ＡＳＴＭ２－３级；也可浇注双性能涡轮，即轮毂和辐板为ＡＳＴＭ２－３级的细晶粒，而叶片为ＡＳＴＭＭ７－Ｍ８级的粗晶粒。     

含铌非调质钢的组织与性能

简单介绍了含铌非调质钢３５ＭｎＶＮｂ的金相组织与力学性能。３５ＭｎＶＮｂ钢通过适当控制热变形工艺，可以得到均匀的铁素体和珠光体组织，用ＱＡ－ｂ图像分析仪测定了珠光体体积百分数，结果为Φ１６～Φ４５ｍｍ轧材的铁素体晶粒和珠光体团的平均尺寸为１１．５～１９．５μｍ，相当于９．７级和８．２级晶粒度；Φ８０ｍｍ锻材的晶粒度平均尺寸为３５．２μｍ，也达到７级。含铌非调质钢奥氏体连续冷却转变曲线说明，要得到铁素体和珠光体组织，最大冷却速度为３．６℃／ｓ，高于此冷速，将产生贝氏体组织，对钢的韧性有严重的影响。     

武钢成功开发螺旋埋弧焊管用X100热连轧板卷

日前，武钢管线钢研发再次取得重大突破，武钢研究院与公司生产厂合作成功研制开发出14．7mmX100级热连轧板卷，经宝鸡石油钢管有限公司制造成Ф1219mm螺旋埋弧焊钢管。经检验，钢管各项性能远高于API5L和ISO3183标准的要求。     

显微组织对TiAl基合金室温断裂韧性的影响

研究了相同晶粒尺寸的不同类型显微组织，以及全层片状组织的晶粒尺寸等因素对Ｔｉ－３３Ａｌ－３Ｃｒ－０．５Ｍｏ（×１００~（－２））合金的室温断裂韧性的影响，结果表明：在晶粒尺寸相当的条件下，随着显微组织中层片状晶团的体积百分数及尺寸的增大，ＴｉＡｌ基合金的室温断裂韧性提高。使用扫描电子显微镜观察了不同显微组织试样的裂纹扩展动态过程。     

铌、氮在中锰奥氏体钢中的作用

阐述了铌、氮在中锰奥氏体钢中的作用及其对中锰钢组织和性能的影响。结果表明，铌、氮能形成Nb2C和NbN，它们可作为非自发结晶的核心，从而使中锰钢的晶粒度从原来的2－3级细化到6－7级，冲击韧性提高36％，裂纹形成功提高105％，此外，铌、氮能降低层错能，阻止位错运动，使钢的加工硬化性能明显提高。     

华北一机厂研制成功X100埋弧焊管

华北一机厂经过反复研究攻关成功研制出X100钢级、直径813毫米×12．5毫米直缝埋弧焊管。经中国石油管材研究所测试评价，钢管质量达到国际同类钢管实物水平。再次填补我国在超高强度管线钢管领域的空白，并填补了世界JCOE工艺生产钢管的空白。     

Q235钢亚态再结晶模型的建立

在物理冶金基本模型基础上，通过实验数据进行回归，建立了Ｑ２３５普碳钢的亚态再结晶及晶粒长大模型，模型和实验所测结果相吻合，采用双道次进行压缩实验，条件为变形速率０．０１－０．１ｓ＾－１，变形温度９５－１１００℃，初始晶粒尺寸５６－８５μｍ。     

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。     

China's Major Non-ferrous Metals Imports & Exports

正~~     

Zinc Production by Province in 2014

正~~     

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.