Microstructure and mechanical properties of TiAl alloys produced by rapid heating and open die forging of blended elemental powder compacts

被引：13

作者：

Su, Yongjun ^{[1
]}

Zhang, Deliang ^{[2
]}

Kong, Fantao ^{[1
]}

Chen, Yuyong ^{[1
]}

机构：

[1] Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China

[2] Univ Waikato, Sch Engn, Waikato Ctr Adv Mat WaiCAM, Hamilton, New Zealand

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 563卷

基金：

中国国家自然科学基金;

关键词：

TiAl alloy; Powder metallurgy; Rapid heating; Open die forging; Mechanical properties; Microstructure; BETA-PHASE; BEHAVIOR; METALLURGY; DEFORMATION; TITANIUM; NB;

D O I：

10.1016/j.msea.2012.11.012

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ti-43Al-5V-4Nb (at%) intermetallic compounds were fabricated by a rapid heating and open die forging method using blended elemental powders. The process route consisted of powder blending, compacting, rapid heating, open die forging and heat treatment. During heating there is porosity in the blended and warm compacted powder billets which still persists after the first forging. In order to remove this difficulty a two stage forging process was used. A fully lamellar structure was seen in the TiAl alloy after heat treatment. Overall, the TiAl alloy showed moderately good mechanical properties at room temperature and good mechanical properties, with reasonable strength and good ductility at high temperatures. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：46 / 52

页数：7

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