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(mass fraction, %) 2.2 Material and experimental procedure The superalloy powder was atomized by plasma rotation electric pole (PREP) technique with the oxygen content of 55×10-6, and the average......
(Hot extrusion,HEX)+等温锻造(Isothermal forging,ITF),我国由于自身装备条件及工艺限制,主要采用AA制粉/等离子旋转电极制粉(Plasma rotating electrode process, PREP)+HIP+热模锻制备粉末冶金高温合金[1-2]. 粉末冶金高温合金的热挤压工艺可有效控制其三大缺陷[2,8-11]:破碎原始颗粒边界(Prior......
法主要包括真空感应熔炼气雾化法(VIGA),等离子旋转电极法(PREP),等离子球化法等[7-10].其中,采用气雾化制备的球形粉末具有纯度高,成本相对低廉,氧含量低,球形度高,细粉收得率高等优点.因此,气雾化已是目前制备球形钛合金粉末应用最广泛的技术之 一[1-2, 11].气雾化制粉装备中通常使用导流管装置,用于引导金属熔融液流从熔炼坩埚中流下并......
征和SPS制备的TLM合金在固溶时效后的组织形貌与力学性能. 1 实验 采用等离子旋转电极(PREP)设备对近β型医用钛合金Ti-25Nb-3Zr-3Mo-2Sn铸锭进行球形预合金粉末的制备,制粉过程中电极棒高速旋转,其端面被等离子弧熔化,端面上被熔化的液滴在离心力的作用下飞出,在冷却介质(氩气)中快速凝固成细小的球形粉末颗粒.将粉末粒度小于150 μm的作为预合金粉末,其实测成分为......
. Research progress on producing spherical titanium powder[J]. Titanium Industry Progress, 2015, 32(1): 7-11. [16] 黄 柯, 赵 阳, 张昌松, 王晓明, 常 青, 邱 六, 关雪飞. PREP法制备球形 CuAl10Fe3 铜合金粉末的性能表征[J]. 材料导报, 2019, 33(11......
of solution temperature on properties of FGH95 PM superalloy manufactured by PREP[J]. Transactions of Materials and Heat Treatment, 2002, 23(3): 72-75. [22] 张俊善. 材料的高温变形与断裂[M]. 北京: 科学出版社, 2007: 103-105......
验 本实验中采用的2A12铝合金粉末由北京艾瑞福斯特技术开发有限公司提供,该粉末通过等离子旋转电极雾化法(PREP)制备,粉末的化学成分和基本特征如表1和表2所列.包套采用1060纯铝,厚度分别为3,2和1 mm(编号为Ⅲ,Ⅱ,Ⅰ),内径为60 mm,高度为120 mm,使用丙酮进行化学清理,去除因机械加工残留在包套内壁上的油污.粉末的装填过程在VSR-200时效振动系统上完成,振动频率为30......
mechanisms. 2 Experimental Pre-alloyed powder with chemical composition of Ti-47Al-2Nb-2Cr-0.2W (at.%) was prepared via plasma rotating electrode processing (PREP). The as-prepared powders......
<100 μm were produced by plasma rotating electrode process (PREP), and the characteristics of the pre-alloyed powders have been reported in Refs. [12,19]. The near net shaped part was manufactured......
Rui. Characterization of prealloyed Ti–6Al–4V powders from EIGA and PREP process and mechanical properties of HIPed powder compacts [J]. Acta Metallurgica Sinica (English Letters), 2017, 30(8): 735-744......