溅射靶材是半导体芯片加工中的配线材料,由于集成电路设计复杂,金属配线对导电性能要求很高[1-2],因此对真空环境下的溅射金属的纯度要求非常严苛,要求纯度达到 99.999％[3-4],本研究选用5NAl作为溅射材料.rn靶材的基座背板主要起到固定和托底的作用,同时在溅射过程中起到迅速冷却的作用[5-6],因此需要选用一种具有一定强度的金属起固定作用,并在长时间的高压下不易变形,易散热的材料作为背板金属[7-8],同时需要和铝具备较好的焊接性,本研究选用TU1-Cu作为背板材料.
在炼钢生产中为保证板坯产品质量避免因钢水的含氧量高而出现皮下气泡等缺陷[1-2],通常需要加入铝锭、硅铝钡钙等强脱氧剂来控制钢水的脱氧深度[3],不可避免地会出现Als及Al2O3等高熔点夹杂物浇注进入中包以后附着在塞棒、上水口以及下水口等位置.此类夹杂物附着以后难以再被冲刷进入钢水,当夹杂物聚集达到一定程度以后,即造成浇铸过程中的絮流现象[4].絮流产生以后控流不稳,浇铸液面剧烈波动,极易造成卷渣,严重时甚至导致漏钢.受液面波动影响,连铸拉速短时间内大幅下降,造成铸坯出现接头及表面纵裂等缺陷,严重影响连
A carbon-containing CoCrFeNi high entropy alloy (HEA) with heterogeneous structures was obtained through thermome-chanical treatments,which induced concurrent recrystallization and carbide precipitation in the alloy.A combination of high yield strength (5
To shed light into the application potential of high-entropy alloys as “interlayer” materials for Al-steel solid-state joining,we investigated the nature of the CoCrFeMnNi/Fe and CoCrFeMnNi/Al solid/solid interfaces,focusing on the bonding behav-ior and p
Entropy-stabilized multi-component alloys have been considered to be prospective structural materials attributing to their impressive mechanical and functional properties.The local chemical complexions,microstates and configurational trans-formations are
Mechanical properties of high-entropy alloys (HEAs) with the face-centered cubic (fcc) structure strongly depend on their initial grain orientations.However,the orientation-dependent mechanical responses and the underlying plastic flow mecha-nisms of such
The influence of simple thermomechanical processing such as hot deformation and heat treatment on the microstructure and hardness of an Al0.3CoCrFeNi high-entropy alloy has been investigated.Results show that the relatively high deformation temperature ca
Phase transformation is one of the essential topics in the studies on high entropy alloys (HEAs).However,characterization of the nucleation behavior in the phase transformation for HEAs is still challenging through experimental methods.In the present work
This study explores a novel WNbMoTaV high-entropy thin film (HETF) in amorphous structure via pulsed laser deposi-tion system.The formation of amorphous structure of this high-entropy alloy is ascribed to the high cooling rate during the deposition proces
In the present study,we investigate the crystal structure of high-entropy alloys (HEAs) in the form of CoFe2NiMn0.3AlCux(x =0.25,0.50,0.75,and 1.00) and their mechanical and magnetic properties.The CoFe2NiMn0.3AlCux alloys are composed of a mixture of a b