Influence of Extrusion Temperature on Microstructure of Ti-47A1-2Cr-2Nb-0. 15B

被引：0

作者：

Liu, Renci ^{[1
]}

Liu, Dong ^{[1
]}

Cui, Yuyou ^{[1
]}

Yang, Rui ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China

来源：

TI-2011: PROCEEDINGS OF THE 12TH WORLD CONFERENCE ON TITANIUM, VOL II | 2012年

关键词：

gamma-titanium aluminide (TiAI); extrusion temperature; microstructure; thermomechanical treatment; GAMMA-TITANIUM ALUMINIDE; ALLOYS;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Influences of extrusion temperature on the deformed and subsequently thermomechanically treated lamellar (TMTL) microstructures of Ti47A1-2Cr-2Nb-0. 15B alloy as observed on the transverse section were investigated. Canned ingots were axisymmetrically-extruded through a flat die to an extrusion ratio of 8 1. The extruded rods on the transverse section consisted of fine duplex microstructure at the edge and fully lamellar (FL) at the center. However, the FL microstructure at the center changed with increasing extrusion temperature: the rods contained remnant lamellae and partially recrystallized FL grains after extrusion at 1250 degrees C and 1280 degrees C, and consisted of completely recrystallized grains after extrusion at 1300 degrees C, with the size and volume fraction of the recrystallized FL grains increasing with the increase of extrusion temperature. The heterogeneity of deformed and TMTL microstructures is believed to be caused by nonuniform deformation and temperature distribution due to deformation heating and die chilling.

引用

页码：1553 / 1557

页数：5

共 50 条

[1] Effect of SPS processing temperature on the microstructure and properties of a Ti49Al47Cr2Nb2 alloy
Couret, Alain
Molenat, Guy
Galy, Jean
Thomas, Marc
ADVANCED INTERMETALLIC-BASED ALLOYS, 2007, 980 : 389 - +
[2] Influence of oxygen on microstructure and mechanical properties of directionally solidified Ti-47Al-2Cr-2Nb alloy
Ding, Hongsheng
Nie, Ge
Chen, Ruirun
Guo, Jingjie
Fu, Hengzhi
MATERIALS & DESIGN, 2012, 41 : 108 - 113
[3] Microstructure and tensile properties of isothermally-forged Ti-47Al-2Nb-1Cr-1V and Ti-47Al-2V-1Cr alloys
Northeastern Univ, Shenyang, China
Journal of Materials Science and Technology, 1997, 13 (06): : 452 - 456
[4] Mechanism of refining microstructure of isothermally forged Ti-47Al-2Cr-1Nb alloy
Wang, Shu-Yun
Li, Hui-Qu
Huang, Zhao-Hui
Lin, Hai
Li, Yuan-Chun
Hangkong Cailiao Xuebao/Journal of Aeronautical Materials, 2002, 22 (01): : 51 - 53
[5] Grain refining processes and microstructure evolution of Ti-47Al-2Cr-1Nb alloy
Huang, Zhao-Hui
Wang, Shu-Yun
Li, Yuan-Chun
Hangkong Cailiao Xuebao/Journal of Aeronautical Materials, 2000, 20 (03): : 42 - 43
[6] CONTROLLING HIGHTEMPERATURE DEFORMATION BY VARYING MICROSTRUCTURE IN A Ti47Al2Cr2Nb ALLOY
T.G.Nieh and J.Wadsworth Lawrence Livermore National Laboratory
TransactionsofNonferrousMetalsSocietyofChina, 1999, (S1) : 254 - 262
[7] MICROSTRUCTURE AND TENSILE PROPERTIES OF Ti-45.5Al-2Cr-2Nb-0.15B ALLOY PROCESSED BY HOT EXTRUSION
Liu Renci
Wang Zhen
Liu Dong
Bai Chunguang
Cui Yuyou
Yang Rui
ACTA METALLURGICA SINICA, 2013, 49 (06) : 641 - 648
[8] EFFECT OF WITHDRAWAL RATE ON THE MICROSTRUCTURE OF DIRECTIONAL SOLIDIFIED Ti-47Al-2Cr-2Nb-0.8B ALLOYS
Yang Lili
Zheng Lijing
Xiao Zhixia
Yan Jie
Zhang Hu
ACTA METALLURGICA SINICA, 2010, 46 (07) : 879 - 884
[9] High temperature oxidation of thermomechanically treated Ti-47Al-2Cr-2Nb
Jang, YD
Lee, DB
Seo, DY
METALS AND MATERIALS INTERNATIONAL, 2002, 8 (06) : 503 - 506
[10] Workability and microstructure evolution of Ti-47Al-2Cr-1Nb alloy during isothermal deformation
Huang, ZH
INTERMETALLICS, 2005, 13 (3-4) : 245 - 250

← 1 2 3 4 5 →