Acta Metall Sin  1995, Vol. 31 Issue (7): 329-332    DOI:

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DENDRITIC ARM SPACING AND MICROSEGREGATION OF DIRECTIONALLY SOLIDIFIED SUPERALLOY DZ22 AT V ARIOUS SOLIDIFICATION RATES

LIU Zhongyuan;LI fianguo;FU Hengzhi(Faculty No;403;NorthwesternPolytechnical University;Hi'an 710072)(Manuscipt received 1994-11-21)

LIU Zhongyuan;LI fianguo;FU Hengzhi(Faculty No;403;NorthwesternPolytechnical University;Hi'an 710072)(Manuscipt received 1994-11-21). DENDRITIC ARM SPACING AND MICROSEGREGATION OF DIRECTIONALLY SOLIDIFIED SUPERALLOY DZ22 AT V ARIOUS SOLIDIFICATION RATES. Acta Metall Sin, 1995, 31(7): 329-332.

Abstract References Related Articles Recommended Metrics Download:  PDF(335KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The dendritic arm spacings and microsegregations of directionally solidified superalloy DZ22 at various solidification rates have been studied with the help of a ZMLMC directional solidification equipment.which has superhigh temperature gradient.The results show that the dendritic arm spacings have been refined highly and the microsegregation has been suppressed seriously with increasing the cooling rate.The primary and secondary dendritic arm spacings.λ1 and λ2.are equal to 28.8 and 8.4 μm respectively.and the microsegregation ratios of elements Na.Ti.Al.Cr.Co and W tend to unity when the solidification rate is equal to 54.2 K·s(-1).Correspondent:LIU Zhongyuan,(associate professor, Faculty No.403,Northwestern Polytechnical University,Hi'an 710072) Key words:  directionally solidified superalloy      solidification rate      cooling rate      dendritic arm spacing      microsegregation      Received:  18 July 1995      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/Y1995/V31/I7/329 1李建国,储双杰,刘忠元,史正兴,傅恒志,材料工程,1991;1:42-442CHUShuangjie,LIJianguo,LIUZhongyuan,SHIZhengxing,FUHengzhi．MetallTrans,1994;25A:637-6423 刘忠元,杨爱民,李建国,史正兴,傅恒志．材料科学进展,1992;6(6):481-4864 王罗宝,陈荣章,王玉屏．铸造高温合金论文集,1986:35-405毛协民,傅恒志．周尧和．西北工业大学学报,1985;3(1):11-20 [1] WANG Fa, JIANG He, DONG Jianxin. Evolution Behavior of Complex Precipitation Phases in Highly Alloyed GH4151 Superalloy[J]. 金属学报, 2023, 59(6): 787-796. [2] ZHANG Yuexin, WANG Jujin, YANG Wen, ZHANG Lifeng. Effect of Cooling Rate on the Evolution of Nonmetallic Inclusions in a Pipeline Steel[J]. 金属学报, 2023, 59(12): 1603-1612. [3] LI Shanshan, CHEN Yun, GONG Tongzhao, CHEN Xingqiu, FU Paixian, LI Dianzhong. Effect of Cooling Rate on the Precipitation Mechanism of Primary Carbide During Solidification in High Carbon-Chromium Bearing Steel[J]. 金属学报, 2022, 58(8): 1024-1034. [4] ZHU Yuping, Naicheng SHENG, XIE Jun, WANG Zhenjiang, XUN Shuling, YU Jinjiang, LI Jinguo, YANG Lin, HOU Guichen, ZHOU Yizhou, SUN Xiaofeng. Precipitation Behavior of W-Rich Phases in a High W-Containing Ni-Based Superalloys K416B[J]. 金属学报, 2021, 57(2): 215-223. [5] WANG Xi,LIU Renci,CAO Ruxin,JIA Qing,CUI Yuyou,YANG Rui. Effect of Cooling Rate on Boride and Room Temperature Tensile Properties of β-Solidifying γ-TiAl Alloys[J]. 金属学报, 2020, 56(2): 203-211. [6] LI Yaqiang, LIU Jianhua, DENG Zhenqiang, QIU Shengtao, ZHANG Pei, ZHENG Guiyun. Peritectic Solidification Characteristics and Mechanism of 15CrMoG Steel[J]. 金属学报, 2020, 56(10): 1335-1342. [7] Wenshu TANG,Junfeng XIAO,Yongjun LI,Jiong ZHANG,Sifeng GAO,Qing NAN. Effect of Re-Heat Rejuvenation Treatment on γ′ Microstructure of Directionally SolidifiedSuperalloy Damaged by Creep[J]. 金属学报, 2019, 55(5): 601-610. [8] GUO Junli, WEN Guanghua, FU Jiaojiao, TANG Ping, HOU Zibing, GU Shaopeng. Influence of Cooling Rate on the Contraction of Peritectic Transformation During Solidification of Peritectic Steels[J]. 金属学报, 2019, 55(10): 1311-1318. [9] Yuan HOU, Zhongming REN, Jiang WANG, Zhenqiang ZHANG, Xia LI. Effect of Longitudinal Static Magnetic Field on the Columnar to Equiaxed Transition in Directionally Solidified GCr15 Bearing Steel[J]. 金属学报, 2018, 54(5): 801-808. [10] Ke ZHANG, Zhaodong LI, Fengli SUI, Zhenghai ZHU, Xiaofeng ZHANG, Xinjun SUN, Zhenyi HUANG, Qilong YONG. Effect of Cooling Rate on Microstructure Evolution and Mechanical Properties of Ti-V-Mo Complex Microalloyed Steel[J]. 金属学报, 2018, 54(1): 31-38. [11] Hongwei ZHANG,Xuezhi QIN,Xiaowu LI,Lanzhang ZHOU. Incipient Melting Behavior and Its Influences on the Mechanical Properties of a Directionally Solidified Ni-Based Superalloy with High Boron Content[J]. 金属学报, 2017, 53(6): 684-694. [12] Qianqian GU, Ying RUAN, Haizhe ZHU, Na YAN. Influence of Cooling Rate on Microstructural Formation of Melt-Spun Fe-Al-Nb Ternary Alloy[J]. 金属学报, 2017, 53(6): 641-647. [13] Xiaofeng HU,Yubin DU,Desheng YAN,Lijian RONG. Cu Precipitation and Its Effect on Damping Capacity and Mechanical Properties of FeCrMoCu Alloy[J]. 金属学报, 2017, 53(5): 601-608. [14] Hua ZHONG,Chuanjun LI,Jiang WANG,Zhongming REN,Yunbo ZHONG,Weidong XUAN. EFFECT OF A HIGH STATIC MAGNETIC FIELD ON MICROSEGREGATION OF DIRECTIONALLY SOLIDIFIED Al-4.5Cu ALLOY[J]. 金属学报, 2016, 52(5): 575-582. [15] Erhu YAN,Lixian SUN,Fen XU,Daming XU. PREDICTION OF THE SOLIDIFICATION PATH OF Al-6.32Cu-25.13Mg ALLOY BY A UNIFIED MICROSEGREGATION MODEL COUPLED WITH THERMO-CALC[J]. 金属学报, 2016, 52(5): 632-640. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed