Ti9Al合金的氢塑性效应  

Ductility Improvement of Ti9Al Alloy by Hydrogen Infiltration

作　　者：潘志强[1] А.В.Выдрин 李明强[1] 张平祥[1] 周廉[1] 

机构地区：[1]西北有色金属研究院,陕西西安710016 [2]俄罗斯南乌拉尔国立大学,车里雅宾斯克404510

出　　处：《稀有金属材料与工程》2003年第10期810-813,共4页Rare Metal Materials and Engineering

摘　　要：采用真空自耗电弧炉熔炼制备Ti9Al合金,通过渗氢处理显著提高氢含量,在凸轮塑性试验机ЧПИ-2上以10mm/min的速度进行热模拟试验。研究发现:氢可以降低Ti9Al合金的相变温度,扩大α+β区的温度范围;氢作为β稳定剂会妨碍或完全抑制以Ti_3Al为基的α_2相的析出;钛合金的氢合金化可促使β相在更低温度下稳定化,明显地提高了Ti9Al合金塑性。Ti9Al alloy ingot is produced by vacuum arc remelting method. The hydrogen content in Ti9Al alloy is raised by hydrogen infiltration. Thermal simulation test is operated on a plastic machine PsiPiPi-2 with a speed of 10 mm/min. In this work, we found the hydrogen infiltration can decrease the temperature of phase transition and enlarge the field of alpha + beta phase. In addition, we can prevent from the production of alpha(2) (Ti3Al) phase and retain beta phase in lower temperature in Ti9Al alloy by this method. The ductility of Ti9Al alloy is improved in evidence by hydrogen infiltration.

关 键 词：塑性 渗氢处理 Ti9Al合金 

分 类 号：TG146.23[一般工业技术—材料科学与工程]