Influence of Neodymium Addition on the Microstructure, Mechanical and Thermal Properties of Mg-Si Alloys

被引：12

作者：

Kumar, K. K. Ajith ^{[1
,2
]}

Viswanath, Abhilash ^{[1
]}

Pillai, U. T. S. ^{[1
]}

Pai, B. C. ^{[1
]}

Chakraborty, M. ^{[2
]}

机构：

[1] CSIR Natl Inst Interdisciplinary Sci & Technol NI, Mat & Minerals Div, Thiruvananthapuram 695019, Kerala, India

[2] Indian Inst Technol, Bhubaneswar 751013, Orissa, India

来源：

6TH INTERNATIONAL CONFERENCE ON CREEP, FATIGUE AND CREEP-FATIGUE INTERACTION | 2013年 / 55卷

关键词：

Mg-Si alloy; Nd addition; microstructure; tensile properties; fractographs; MAGNESIUM;

D O I：

10.1016/j.proeng.2013.03.227

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The present work aims to investigate the influence of neodymium addition on the microstructure, mechanical and thermal properties of Mg-Si alloys. Different proportions of (0.3, 0.6, 0.9 and 1.2 wt.%) Nd has been added to the hypo (Mg-1.15Si) and hypereutectic (Mg-6Si) alloys. The microstructural studies reveal that the Nd additions change the size and morphology of Mg-halos in the hypoeutectic Mg-Si alloy. In the hypereutectic alloy, the Nd additions considerably reduce the size of the primary Mg2Si phase besides, modifying the Mg2Si morphology from a coarse dendritic to a polyhedral shape. The amount of Nd required for the optimal modification of both alloys is experimentally determined. Increase in mechanical properties obtained with Nd addition is correlated with the microstructural refinement. To understand the microfracture mechanism, the SEM analysis has been carried out. (C) 2013 The Authors. Published by Elsevier Ltd.

引用

页码：103 / 108

页数：6

共 14 条

[1]

Blawert C, 2004, T INDIAN I METALS, V57, P397

[2] Low frequency damping capacities and mechanical properties of Mg-Si alloys [J].

Hu, X. S. ;

Wu, K. ;

Zheng, M. Y. ;

Gan, W. M. ;

Wang, X. J. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 452 :374-379

[3] Modification of Mg2Si in Mg-Si alloys with yttrium [J].

Jiang, QC ;

Wang, HY ;

Wang, Y ;

Ma, BX ;

Wang, JG .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 392 (1-2) :130-135

[4] Recent magnesium alloy development for elevated temperature applications [J].

Luo, AA .

INTERNATIONAL MATERIALS REVIEWS, 2004, 49 (01) :13-30

[5] High temperature tensile properties of modified Mg/Mg2Si in situ composite [J].

Mirshahi, Farshid ;

Meratian, Mahrnoud .

MATERIALS & DESIGN, 2012, 33 :557-562

[6]

Mirshahi Farshid, 2011, MAT SCI ENG A

[7] Formation of magnesium silicide by mechanical alloying [J].

Niu, XP ;

Lu, L .

ADVANCED PERFORMANCE MATERIALS, 1997, 4 (03) :275-283

[8] Microstructural formation in a hypereutectic Mg-Si alloy [J].

Pan, YC ;

Liu, XF ;

Yang, H .

MATERIALS CHARACTERIZATION, 2005, 55 (03) :241-247

[9] In-situ Fabrication and Properties of Mg2Si/AZ91D Magnesium Matrix Composites [J].

Wang, Xiaoying ;

Zhao, Yutao ;

Chen, Gang ;

Zhang, Songli ;

Cheng, Xiaonong .

ADVANCES IN COMPOSITES, PTS 1 AND 2, 2011, 150-151 :1640-1643

[10] Review of recent studies in magnesium matrix composites [J].

Ye, HZ ;

Liu, XY .

JOURNAL OF MATERIALS SCIENCE, 2004, 39 (20) :6153-6171

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