Acta Metall Sin  1993, Vol. 29 Issue (2): 1-7    DOI:

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MICROSTRUCTURE ON PHASE TRANSFORMATION OF TWO-PHASE TiAl-BASE ALLOYS

HAO Shiming;WU Wentao;HAN Chuanxi Northeast University of Technology; Shenyang; Northwest Institute for Non-ferrous Metal Research; Baoji

HAO Shiming;WU Wentao;HAN Chuanxi Northeast University of Technology; Shenyang; Northwest Institute for Non-ferrous Metal Research; Baoji. MICROSTRUCTURE ON PHASE TRANSFORMATION OF TWO-PHASE TiAl-BASE ALLOYS. Acta Metall Sin, 1993, 29(2): 1-7.

Abstract References Related Articles Recommended Metrics Download:  PDF(3132KB)  Export:  BibTeX | EndNote (RIS)       Abstract  A supersaturated single phase ordered α_2 structure in as rapidly quenched al-loys both Ti-42at.-%Al and Ti-45at.-%Al, after solid solution treatment, was revealed un-der observation with optical and transmission electron microscope as well as X-raydiffraction analysis. The supersaturated single phase may transform into a lamellar structureof γ+α_2 with a discontinuous decomposition mechanism in Ti-42at.-% Al alloy and with asemicontinuous decomposition mechanism in Ti-45at.-%Al alloy when it aged isothermallyin the two-phase range between 1000 and 1100℃. The semicontinuous transformation in-volves two process: precipitation of primary lamellar γ phase and subsequent formation ofcellular microstructure, in result, the initial even grain boundaries of α_2 become sawtooth. Key words:  TiAl      dual phase γ+α_2      phase transformation      Received:  18 February 1993      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/Y1993/V29/I2/1 1 Murray J L. Metall Trans, 1988; 19A: 243 2 McCullough C, Valencia J J, Levi C G, Mehrabian R. Acta Metall 1989; 37: 1321 3 Kikuchi M, Yamabe Y. In: Izumi O ed., Proc 6th Japan Institute of Metals International Symposium on Intermetallic Compounde (JIMIS-6) , Sendai, 1991: 815 4 郝士明,赵泉.第3届全国有色金属材料与加工学术会议文集,杭州,1991:281 5 Blackburn M J. In: Jaffee R I, Promisel N E eds., Science, Technology and Application of Titanium, London: Pergamon, 1970: 633 6 Aaronson H I, Aaron H B. Metall Trans, 1972; 3: 2743 [1] 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. [2] LI Fulin, FU Rui, BAI Yunrui, MENG Lingchao, TAN Haibing, ZHONG Yan, TIAN Wei, DU Jinhui, TIAN Zhiling. Effects of Initial Grain Size and Strengthening Phase on Thermal Deformation and Recrystallization Behavior of GH4096 Superalloy[J]. 金属学报, 2023, 59(7): 855-870. [3] FENG Aihan, CHEN Qiang, WANG Jian, WANG Hao, QU Shoujiang, CHEN Daolun. Thermal Stability of Microstructures in Low-Density Ti2AlNb-Based Alloy Hot Rolled Plate[J]. 金属学报, 2023, 59(6): 777-786. [4] XIA Dahai, JI Yuanyuan, MAO Yingchang, DENG Chengman, ZHU Yu, HU Wenbin. Localized Corrosion Mechanism of 2024 Aluminum Alloy in a Simulated Dynamic Seawater/Air Interface[J]. 金属学报, 2023, 59(2): 297-308. [5] WANG Hu, ZHAO Lin, PENG Yun, CAI Xiaotao, TIAN Zhiling. Microstructure and Mechanical Properties of TiB2 Reinforced TiAl-Based Alloy Coatings Prepared by Laser Melting Deposition[J]. 金属学报, 2023, 59(2): 226-236. [6] WANG Chongyang, HAN Shiwei, XIE Feng, HU Long, DENG Dean. Influence of Solid-State Phase Transformation and Softening Effect on Welding Residual Stress of Ultra-High Strength Steel[J]. 金属学报, 2023, 59(12): 1613-1623. [7] ZHANG Kaiyuan, DONG Wenchao, ZHAO Dong, LI Shijian, LU Shanping. Effect of Solid-State Phase Transformation on Stress and Distortion for Fe-Co-Ni Ultra-High Strength Steel Components During Welding and Vacuum Gas Quenching Processes[J]. 金属学报, 2023, 59(12): 1633-1643. [8] LI Sai, YANG Zenan, ZHANG Chi, YANG Zhigang. Phase Field Study of the Diffusional Paths in Pearlite-Austenite Transformation[J]. 金属学报, 2023, 59(10): 1376-1388. [9] LI Xiaobing, QIAN Kun, SHU Lei, ZHANG Mengshu, ZHANG Jinhu, CHEN Bo, LIU Kui. Effect of W Content on the Phase Transformation Behavior in Ti-42Al-5Mn- xW Alloy[J]. 金属学报, 2023, 59(10): 1401-1410. [10] SHEN Yingying, ZHANG Guoxing, JIA Qing, WANG Yumin, CUI Yuyou, YANG Rui. Interfacial Reaction and Thermal Stability of the SiCf/TiAl Composites[J]. 金属学报, 2022, 58(9): 1150-1158. [11] LIU Renci, WANG Peng, CAO Ruxin, NI Mingjie, LIU Dong, CUI Yuyou, YANG Rui. Influence of Thermal Exposure at 700oC on the Microstructure and Morphology in the Surface of β-Solidifying γ-TiAl Alloys[J]. 金属学报, 2022, 58(8): 1003-1012. [12] CHEN Yuyong, YE Yuan, SUN Jianfei. Present Status for Rolling TiAl Alloy Sheet[J]. 金属学报, 2022, 58(8): 965-978. [13] HU Chen, PAN Shuai, HUANG Mingxin. Strong and Tough Heterogeneous TWIP Steel Fabricated by Warm Rolling[J]. 金属学报, 2022, 58(11): 1519-1526. [14] LI Xueda, LI Chunyu, CAO Ning, LIN Xueqiang, SUN Jianbo. Crystallography of Reverted Austenite in the Intercritically Reheated Coarse-Grained Heat-Affected Zone of High Strength Pipeline Steel[J]. 金属学报, 2021, 57(8): 967-976. [15] FENG Miaomiao, ZHANG Hongwei, SHAO Jingxia, LI Tie, LEI Hong, WANG Qiang. Prediction of Macrosegregation of Fe-C Peritectic Alloy Ingot Through Coupling with Thermodynamic Phase Transformation Path[J]. 金属学报, 2021, 57(8): 1057-1072. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed