塑料合金发展要加快

塑料合金可广泛用于汽车、电子设备、包装材料、建筑材料等领域，目前已成为塑料工业中最为活跃的领域之一，增长十分迅速。     

无铅焊料合金

以往的以Sn为主成分的无铅焊料，如果在变压器或电机的线圈部件端部进行预镀，形成于熔化焊料上的氧化屑附着在电镀部，则被废弃的氧化屑较多。为此，日本千住金属工业株式会社提供一种可抑制焊料在400℃附近氧化的无铅焊料（专利公开2004—181485）。     

Effects of Cerium on Microalloying in Low Sulfur Nb-Ti-Bearing Steel

The overcooling austenite CCT curves were investigated by using THERMECMASTOR-Z simula-tion machine, the test samples refining from 50kg vacuum induction furnace and two-stage controlled rolling in laboratorial condition. Test results show that addition cerium (Ce) in low sulfur Nb-Ti-bearing steel affects as follows: Ce can. increase the transformation point t Ar3 and t Ar1, enlarge the intervals of temperature (tAr1-tAr3).Ce can make the CCT curves to move upper and right, reduce the hardenability. Ce can increase the transformation temperature of bainite and enlarge intervals of bainite. The martensites become from coarse strip to fine strip by Ce in higher cooling rates. Ce can decrease MS and enhance the trend of lath martensitic structure and limit the formation of lamellar crystal.     

Yuchai Casting Center Becoming the Largest Production Base of Diesel Engine Castings in Asia

On July 16, 2008, the Ground-Breaking ＆ Foundation-Laying ceremony of Yuchai Casting Center was held grandly in Yuchai Industrial Park Zone A. The center is planned to occupy total land area of 1,800 Mu. After construction and putting into operation, the center will have the annual production capacity of 290,000 tons of diesel engine cylinder blocks,     

化学镀Ni—P镀层的X射线衍射研究

根据X射线衍射分析结果,对化学镀高P(含P>11wt％或19at％)Ni-P镀层加热时效时,镀层成分和加热温度对结构转变的影响作了研究,结果表明,高P共晶、过共晶(含P>11wt％或19at％)合金的结构转变有如下特征:(1)相同加热时效条件下,Ni-P合金的结构转变与成分有密切关系:(2)对同一成分的过共晶合金,Ni-P合金的结构转变与时效温度密切相关;(3)过共晶合金在290～360℃温度范围内时效处理,出现Ni_xP_y介稳相,X射线衍射分析认为Ni_xP_y为Ni_(12)P_5。     

快速凝固Al－Li－Mg－Cu－Zr合金粉末除气机制的研究

较系统地研究了不同除气温度及不同除气时间快速凝固（ＲＳ）Ａｌ－Ｌｉ－Ｍｇ－Ｃｕ－Ｚｒ合金粉未表面结构及氧化层的组成，探讨了除气过程中粉未表面的反应，从理论上揭示了ＲＳＡｌ－Ｌｉ合金粉末除气的规律及机制。