布里奇曼定向凝固Ni-12%Si过共晶的弹性模量与断裂韧性

doi:10.11896/cldb.17120221

材料导报

2019, Vol. 33

Issue (8): 1383-1388 https://doi.org/10.11896/cldb.17120221

金属与金属基复合材料

布里奇曼定向凝固Ni-12%Si过共晶的弹性模量与断裂韧性

卢百平¹, 崔春娟^2,3, 田露露², 问亚岗², 王佩²

1 南昌航空大学轻合金加工科学与技术国防重点学科实验室,南昌 330063
2 西安建筑科技大学冶金工程学院,西安 710055
3 陕西省耐磨材料工程技术研究中心,西安 710055

Elastic Modulus and Fracture Toughness of Bridgman Directionally Solidified Ni-12%Si Hypereutectic

LU Baiping¹, CUI Chunjuan^2,3, TIAN Lulu², WEN Yagang², WANG Pei²

1 National Defense Key Discipline Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University, Nanchang 330063
2 School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055
3 Shaanxi Engineering Technology Research Center for Wear-resisting Materials, Xi'an 710055

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摘要本研究采用第一性原理计算了Ni₃Si金属间化合物的弹性模量,并用Ipp6.0图像分析软件对不同凝固速率的Ni-12%Si(质量分数)过共晶定向凝固组织中α-Ni相的体积分数进行了定量分析。根据复合材料的混合法则预测了不同凝固速率的Ni-12%Si过共晶的塑性。此外,采用三点弯曲法研究了不同凝固速率的Ni-12%Si过共晶的断裂韧性,并分析了断口形貌以及断裂机理。

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关键词: 定向凝固第一性原理过共晶断裂韧性三点弯曲

Abstract: In this study, the elastic modulus of the Ni₃Si intermetallic compound was calculated by the first principles, and the volume fractions of α-Ni phase in the Bridgman directionally solidified Ni-12%Si (mass fraction) hypereutectic at different solidification rates were analyzed by the Ipp 6.0 image analysis software. The plasticities of the Ni-12%Si hypereutectic at different solidification rates were predicted according to the mixing rule of composite materials. Moreover, the fracture toughnesses of the Ni-12%Si hypereutectic at different solidification rates were studied by three-point bending method , and the fracture morphology and the fracture mechanism were studied as well.

Key words: directional solidification first principle hypereutectic alloy fracture toughness three-point bending

出版日期: 2019-04-25 发布日期: 2019-04-28

ZTFLH:

TG244+.3

基金资助: 国家自然科学基金(51201121);南昌航空大学轻合金加工科学与技术国防重点学科实验室开放课题(gf201601001);2015陕西省留学人员科技活动择优资助项目;陕西省耐磨材料工程技术研究中心专项资金项目(2016NMZX03)

作者简介: 卢百平,南昌航空大学教授,硕士生导师,江西省中青年骨干教师,江西省铸造学会理事,江西省金属学会理事。2004年博士毕业于西北工业大学。崔春娟,博士,教授,博士研究生导师,中国材料研究学会会员,中国有色金属学会会员。1995年7月毕业于电子科技大学材料科学与工程系,2005年3月和2008年7月在西北工业大学材料学院分获工学硕士和博士学位,随后在西安建筑科技大学冶金工程学院任教至今。Email: cuichunjuan@xauat.edu.cn

引用本文:

卢百平, 崔春娟, 田露露, 问亚岗, 王佩. 布里奇曼定向凝固Ni-12%Si过共晶的弹性模量与断裂韧性[J]. 材料导报, 2019, 33(8): 1383-1388.
LU Baiping, CUI Chunjuan, TIAN Lulu, WEN Yagang, WANG Pei. Elastic Modulus and Fracture Toughness of Bridgman Directionally Solidified Ni-12%Si Hypereutectic. Materials Reports, 2019, 33(8): 1383-1388.

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http://www.mater-rep.com/CN/10.11896/cldb.17120221 或 http://www.mater-rep.com/CN/Y2019/V33/I8/1383

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