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7.The Development of Tungsten Heavy Alloys' Invertigation

Abstract:Alloying and Mechanical Alloying are two important methods to develop and to inhance the properties of tungsten heavy alloys.The development of investigation in this field is mainly reviewed in this paper.
Key words:Tungsten Heavy Alloys,Alloying,Mechanical Alloying

鎢基高比重合金性能的研究進展
摘要：合金化和機械合金化是改善和提高鎢基高比重合金性能的重要方法，本文對這方面研究的國內外動態進行了綜述。
關鍵詞：鎢基高比重合金、合金化、機械合金化

8.Recent research progress and prospect of armour-piercing projectile in China

Abstract:The research advances in high denisity tungsten alloy strengthening techniques of alloying,rotaryswage,torsional deformation and hydrostatic extrusion are reviewed.The research status of the adiabtic shear mechanism and numerical simulation is also introduced.The latest research progress in special manufacturing techniques,including mechanical alloying for nanometer tungsten alloy composite powder,warm compaction and preoxided activation sintering,is introduced.Based on the analysis of some main problems existing in the development of high density tungsten alloy for armour-piercing projectile,the future research directions,tactics and measures are put forward.
Key words:armour-piercing projectile,high density tungsten alloy,research status,research direction

我國穿甲彈用鎢合金研究的最新進展與展望
摘要：綜合介紹了我國近年來對穿甲彈用高密度鎢合金實施添加微量元素合金化強化和旋轉鍛造、扭轉變形、靜液擠壓等形變強化的研究進展，以及對于絕熱剪切機理和數值模擬計算的研究現狀，并介紹了機械合金化制備納米鎢合金復合粉末、溫壓成形及預氧化活化燒結等特種制備技術方面的最新試驗研究進展。通過全面分析目前我國穿甲彈用高密度鎢合金試驗研究中存在的一些主要問題，提出我國穿甲彈用高密度鎢合金今后研制的主攻方向，以及促進高性能穿甲彈用鎢合金研制應采取的策略與措施。
關鍵詞：穿甲彈、鎢合金、研究現狀、發展展望

9.The Affect to Tungsten-base High-density Alloy's Micro Tussues and Functions of Nickel's Adding Way

Abstract:The paper studies 4 adding-ways for Ni added to W-base high-density alloy.The result indicates that Ni adds alloy with common reduction addiny way.The alloy has good activaced sintering action in liquid-phase sintering,reduces alloy's sintering timperature,crytaling grain is very small,which aviods forming fragile phase WNI4 between metal and has rather good physics mechanics functions.
Key words:High-density alloy activated sintering

鎳的添加方式對鎢基高比重合金顯微組織和性能的影響
摘要：對鎳加入到鎢基高比重合金中的四種方式進行了研究。結果表明，鎳以共還原法的方式加入，所得合金在液相燒結時的活化作用大，降低了合金的燒結溫度，鎢晶粒微細，仿上了脆性相WNi4金屬間化合物的形成，同時合金具有較高的物理和力學性能。
關鍵詞：高比重合金、活化燒結、粉末冶金、鎢基合金

10.Deformation Strengthening of High Density W-Ni-Fe Alloys

Abstract:The correlation among the degree reduction mechanical properties and microstructure of three W-Ni-Fe alloy with different W contents has been investigated in deformation strengthening process.
The experimental results showed that the strength and hardness of the deformed alloys invreased with degree of deformation.Moreover,the deformation strength-ening effect of the higher W content decreased as the deformation was higher than 15% and the W grains were ahangrated decreased as the deformation in the deformed alloys.The cleavage failur across W grains became the main mode of fracture and the slip bands emerger on the fracture face.The optimal temperature of vacuum annealing of vacuum annealing of deformed alloys,and the characteristics and mechanism of deformation of biphase W alloys have been discussed in this paper as well.
Key words:high density W alloy,deformation strengthening,mechanical property,deformation mechanism,microstucture.

高比重W—Ni—Fe合金的變形強化
摘要：在三種鎢含量的W-Ni-Fe合金變形強化過程中，研究了變形量呵力學性能與顯微組織之間的關系。試驗結果表明：隨著鎢合金變形量的增加，變形合金的強度和硬度亦增加，當變形量超過15%后，高鎢含量合金的變形強化作用逐漸減小。在變形合金的顯微組織中，鎢顆粒沿棒料軸向明顯拉長，同時解理斷裂成為斷口的主要形式，并顯現出鎢合金斷面上的滑移帶。本文還討論了變形合金在真空下，最佳調質退火溫度和兩相鎢合金的形變特點、變形機制等。
關鍵詞：高比重鎢合金、變形強化、力學性能、變形機制、顯微組織

11. Contact Materials Applied for Vacuum Interrupter

Abstract:This paper describe the requirements and charateristics of contact material for vacuum interrupter,demonstrates some of common contact materials to be used in different kind of vacuum tinterrupters,such as CuTeSe,CuCr and AgWC in recent years.In the final,introduces the development and research works of news contact materials in domestic and international.
Key words:Contact materials,Vacuum interrupter,Development and research

用于真空開關的觸頭材料
摘要：本文分析了用于真空開關的觸頭材料的要求和性能，闡述了最近幾年來常用于各種真空開關中的觸頭材料，如CuTeSe、CuCr和AgWC等，文章最后還介紹了國內外正在開發和研究的新觸頭材料的情況。
關鍵詞：觸頭材料、真空開關、開發和研究

12. Structure/Property and Process of Tungsten Heavy Alloy

Abstract:In this paper,the structure/property relationshio in sintered tungsten heavy alloy is reotewed and the influences of tungsten grain size,contuguity,tungsten phase content structure unformity pore size and porosity impurtes segregation and second phase percipitation to interface on properties of the alloy are also mainly described.The microstructure and propertues could be improved through process.
Key words:tungsten heavy alloy,micristructure,property,process

高比重合金顯微組織,性能與工藝
摘要：闡述了高比重合金的顯微組織與性能的關系，著重討論了W晶粒大小、W顆粒鏈接度、W相含量、組織均勻性、孔隙大小、界面雜質偏析與第二相析出等對合金性能的影響。通過工藝的改進可以改變顯微結構，從而改進合金的性能。
關鍵詞：高比重合金、顯微組織、性能、工藝、合金、鎢晶粒

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