Acta Metall Sin  1994, Vol. 30 Issue (3): 97-103    DOI:

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EFFECT OF Cr ON MICROSTRUCTURE OF Ti_3Al＋TiAl ALLOYS

ZHENG Yunrong(Institute of Aeronautical Materials;Beijing);ZHAO Linruo(Institute for Aerospace Research;Ottawa;Canada);TANGRI Kris(University of Manitoba;Winnipeg;Canada)(Manuscript received 21 June;1993)

ZHENG Yunrong(Institute of Aeronautical Materials;Beijing);ZHAO Linruo(Institute for Aerospace Research;Ottawa;Canada);TANGRI Kris(University of Manitoba;Winnipeg;Canada)(Manuscript received 21 June;1993). EFFECT OF Cr ON MICROSTRUCTURE OF Ti_3Al＋TiAl ALLOYS. Acta Metall Sin, 1994, 30(3): 97-103.

Abstract References Related Articles Recommended Metrics Download:  PDF(512KB)  Export:  BibTeX | EndNote (RIS)       Abstract  As-cast microstructure and its changes during heat treatment for Ti-44.9Al(at.-%) and Ti-44.3Al-3Cr(at.-%) have been investigated.The addition of Cr increased the amount of TiAl(γ) phase in the binary Ti-Al alloy and changed the α_2 lamellae into block shaped particles.Cr accelerated the discontinuous coarsening process of the lamellar α_2+γ,by which the finer new-growing lamellar grains were formed.Therefore,addition of Cr and long-time heat treatment at 1150℃ are an effective way to refine the large lamellar grains of α_2+γ in as-cast alloy.Cr promoted the formation of an ordered bcc β_2 phase.Correspondent:ZHENG Yunrong,professor,Laboraiory No.4,Institute of Aeronautical Materials,Beijing 100095 Key words:  TiAl-base alloy      Cr      phase transformation      coarsening      Received:  18 March 1994      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1994/V30/I3/97 1KawabataT,TamuraT,IzumiO．MaterResSocSympProc,1989;133:3292WunderlichW,KremserT,FrommeyerG．ZMetallk,1990;81:8023HuangSC,HallEL．MetallTrans,1991,22A:26194ShihDS,HuangSC,ScarrGK,JangH,ChesnuttJC．In:BoyerR,HallJ,KimY-Weds．,Microstructure//PropertyRelationshipTitaniumAlloysandTitaniumAluminideTMS,Warrendale,PA,1991:1355MasahashiN,MiZuharaY,MatsuoM,HashimotoK,KimuraM,HanamuraT,FujiiH．MaterResSocSympProc,1991;213:7956ZhengY(郑运荣),ZhaoL(赵林若),TangriK．ScrMetallMater,1992;26:219 [1] CHEN Jia, GUO Min, YANG Min, LIU Lin, ZHANG Jun. Effects of W Concentration on Creep Microstructure and Property of Novel Co-Based Superalloys[J]. 金属学报, 2023, 59(9): 1209-1220. [2] LI Jiarong, DONG Jianmin, HAN Mei, LIU Shizhong. Effects of Sand Blasting on Surface Integrity and High Cycle Fatigue Properties of DD6 Single Crystal Superalloy[J]. 金属学报, 2023, 59(9): 1201-1208. [3] JIANG He, NAI Qiliang, XU Chao, ZHAO Xiao, YAO Zhihao, DONG Jianxin. Sensitive Temperature and Reason of Rapid Fatigue Crack Propagation in Nickel-Based Superalloy[J]. 金属学报, 2023, 59(9): 1190-1200. [4] GONG Shengkai, LIU Yuan, GENG Lilun, RU Yi, ZHAO Wenyue, PEI Yanling, LI Shusuo. Advances in the Regulation and Interfacial Behavior of Coatings/Superalloys[J]. 金属学报, 2023, 59(9): 1097-1108. [5] BAI Jiaming, LIU Jiantao, JIA Jian, ZHANG Yiwen. Creep Properties and Solute Atomic Segregation of High-W and High-Ta Type Powder Metallurgy Superalloy[J]. 金属学报, 2023, 59(9): 1230-1242. [6] ZHAO Peng, XIE Guang, DUAN Huichao, ZHANG Jian, DU Kui. Recrystallization During Thermo-Mechanical Fatigue of Two High-Generation Ni-Based Single Crystal Superalloys[J]. 金属学报, 2023, 59(9): 1221-1229. [7] ZHANG Jian, WANG Li, XIE Guang, WANG Dong, SHEN Jian, LU Yuzhang, HUANG Yaqi, LI Yawei. Recent Progress in Research and Development of Nickel-Based Single Crystal Superalloys[J]. 金属学报, 2023, 59(9): 1109-1124. [8] WANG Lei, LIU Mengya, LIU Yang, SONG Xiu, MENG Fanqiang. Research Progress on Surface Impact Strengthening Mechanisms and Application of Nickel-Based Superalloys[J]. 金属学报, 2023, 59(9): 1173-1189. [9] FENG Qiang, LU Song, LI Wendao, ZHANG Xiaorui, LI Longfei, ZOU Min, ZHUANG Xiaoli. Recent Progress in Alloy Design and Creep Mechanism of γ'-Strengthened Co-Based Superalloys[J]. 金属学报, 2023, 59(9): 1125-1143. [10] ZHANG Leilei, CHEN Jingyang, TANG Xin, XIAO Chengbo, ZHANG Mingjun, YANG Qing. Evolution of Microstructures and Mechanical Properties of K439B Superalloy During Long-Term Aging at 800oC[J]. 金属学报, 2023, 59(9): 1253-1264. [11] LU Nannan, GUO Yimo, YANG Shulin, LIANG Jingjing, ZHOU Yizhou, SUN Xiaofeng, LI Jinguo. Formation Mechanisms of Hot Cracks in Laser Additive Repairing Single Crystal Superalloys[J]. 金属学报, 2023, 59(9): 1243-1252. [12] MU Yahang, ZHANG Xue, CHEN Ziming, SUN Xiaofeng, LIANG Jingjing, LI Jinguo, ZHOU Yizhou. Modeling of Crack Susceptibility of Ni-Based Superalloy for Additive Manufacturing via Thermodynamic Calculation and Machine Learning[J]. 金属学报, 2023, 59(8): 1075-1086. [13] LI Jingren, XIE Dongsheng, ZHANG Dongdong, XIE Hongbo, PAN Hucheng, REN Yuping, QIN Gaowu. Microstructure Evolution Mechanism of New Low-Alloyed High-Strength Mg-0.2Ce-0.2Ca Alloy During Extrusion[J]. 金属学报, 2023, 59(8): 1087-1096. [14] ZHANG Haifeng, YAN Haile, FANG Feng, JIA Nan. Molecular Dynamic Simulations of Deformation Mechanisms for FeMnCoCrNi High-Entropy Alloy Bicrystal Micropillars[J]. 金属学报, 2023, 59(8): 1051-1064. [15] CHEN Liqing, LI Xing, ZHAO Yang, WANG Shuai, FENG Yang. Overview of Research and Development of High-Manganese Damping Steel with Integrated Structure and Function[J]. 金属学报, 2023, 59(8): 1015-1026. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed