摘要
以还原钨粉、羰基镍粉和羰基铁粉为原料,研究了压制压力对微波烧结90W-7Ni-3Fe高密度合金性能的影响,并对分别在1480℃和1460℃烧结的合金性能进行对比分析。实验结果表明:微波烧结W-Ni-Fe高密度合金的密度和力学性能随压制压力升高而升高,在600MPa时达到最大,随后迅速下降。在1480℃进行微波烧结的合金,其各项性能明显高于在1460℃烧结的,例如,在600MPa时,前者的相对密度为97.5%,而后者为96.3%;前者的断口存在穿晶断裂,后者则沿晶断裂明显。
Using reductive tungsten powder carbox＇yl-iron powder and carbox＇yl-nickel powder as raw material, the influence of compacting pressure on properties of microwave sintered 90W-7Ni-3Fe high density alloys and the differential in properties of the alloys sintered at 1 480 ℃ and 1 460 ℃ respectively were studied. The results showe that with the pressure increasing, the density and mechanical properties of the alloy increase, and reach maximum at 600 MPa, then decrease. The properties of the alloy sintered at 1 480 ℃ is evidently higher than that of at 1 460 ℃, e.g. at 600 MPa pressure condition, the former＇s density is 97.5%, the latter＇s density is 96.3%, the former＇s fracture is intercrystalline rupture, and the latter＇s is clear along-crystalline separation.
出处
《粉末冶金材料科学与工程》
EI
2007年第3期156-159,共4页
Materials Science and Engineering of Powder Metallurgy
基金
民口配套"十五"重点项目
关键词
W-Ni-Fe高密度合金
压制压力
力学性能
微波烧结
W-Ni-Fe high density alloys
compacting pressure
mechanical properties
microwave sintering
