论文部分内容阅读
日本新日铁和东邦钛公司共同开发成功和传统产品相比成本降低约30%且容易加工的钛合金。原钛合金的成份为钛90%、铝6%、钯4%。原板价为4000日元/kg,而新开发成功的钛合金可降低到2500～3000日元/kg。主要措施是以铁来代替昂贵的钯、防止升温后晶粒长大;另以氧和氮来代铝,改善钛合金的塑性。其最佳成份为:钛97.95%,铁1.5%,氧0.5%,氮0.05%;常温下σ_h≥1000kg/mm~2,δ≥20%。由于抗疲劳性能有所改善,有利于在高温下加工成更薄的制品。
Nippon Steel and Toho Titanium jointly develop titanium alloys that are about 30% less costly and easier to machine than conventional ones. The composition of the original titanium alloy titanium 90%, 6% aluminum, palladium 4%. The original price of 4000 yen / kg, while the newly developed titanium alloy can be reduced to 2500-3000 yen / kg. The main measure is to replace iron with expensive palladium to prevent grain growth after heating; the other with oxygen and nitrogen to replace aluminum, to improve the plasticity of titanium alloys. Its best composition is as follows: 97.95% titanium, 1.5% iron, 0.5% oxygen and 0.05% nitrogen; σ_h≥1000kg / mm ~ 2 and δ≥20% at room temperature. As anti-fatigue properties have improved, is conducive to processed into thinner products at high temperatures.