文章信息/Info

Title:

Research and Development of Orthorhombic Titanium Aluminide

作者:

杜  剛; 崔林林; 雷強; 杜玉俊; 齊銳; 王瑋東; 付寶全

西部超導材料科技股份有限公司

Author(s):

DU Gang;  CUI Linlin;  LEI Qiang;  DU Yujun;  QI Rui;  Wang Weidong;  FU Baoquan

Western Superconducting Technologies Co.

關鍵詞:

O相合金; Ti₂AlNb; 力學性能; 工程應用

Keywords:

orthorhombic alloy;  Ti2AlNb;  mechanical properties;  engineering application

DOI:

10.7502/j.issn.1674-3962.2018.01.10

文獻標志碼:

A

摘要:

具有O相結構的Ti₂AlNb合金是在Ti3Al系合金基礎上拓展出來的新型金屬間化合物材料，兼具了高的高溫強度和相對較低的密度的特點，有望替代現有的Inconel 718鎳基高溫合金，用于制造高推重比航空發動機中的非轉動部件甚至轉動部件。概述了Ti₂AlNb合金的特點和近年來我國在Ti₂AlNb合金工程化研究方面取得的主要進展，對Ti₂AlNb合金存在的不足以及當前研制過程中存在的主要問題進行了闡述，指出應立足于現有的鈦合金冶煉和加工裝備，并結合Ti₂AlNb合金自身的特點，開發出成本更低、生產效率更高的工業化生產工藝技術。

Abstract:

Ti₂AlNb alloy with orthorhombic phase represents the youngest class of alloys emerging out of Ti-Al titanium aluminides, as a constituent in Ti₃Al-based alloy. With excellent high temperature performance and lower density, this new material is aimed to replace the existing Inconel 718 nickel-based superalloy, used in the manufacture of high thrust weight ratio aeroengine non-rotating parts or even rotating parts. This article briefly summarized the characteristics of Ti₂AlNb alloy and the main progress made in the engineering technologies of Ti₂AlNb alloy in China in recent years. In addition, the existing shortcomings of Ti₂AlNb alloy and the main problems in the current research were also discussed. It was pointed out that the industrial production process technology with lower cost and higher production efficiency should be developed basing on the existing titanium alloy smelting and processing equipment and combining with the characteristics of Ti₂AlNb alloy.