High Cycle Fatigue of Cast Mg-3Nd-0.2Zn Magnesium Alloys

被引：36

作者：

Li, Zhenming ^{[1
,2
]}

Wang, Qigui ^{[3
]}

Luo, Alan A. ^{[4
]}

Fu, Penghuai ^{[1
,2
]}

Peng, Liming ^{[1
,2
]}

Wang, Yingxin ^{[1
,2
]}

Wu, Guohua ^{[1
,2
]}

机构：

[1] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloys Net Forming, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composite, Shanghai 200240, Peoples R China

[3] Gen Motors, Proc & Property Modeling & Optimizat, Warren, MI 48090 USA

[4] Gen Motors, Warren, MI 48090 USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2013年 / 44A卷 / 11期

基金：

中国国家自然科学基金;

关键词：

ATOMIC-FORCE MICROSCOPY; MECHANICAL-PROPERTIES; WT.PERCENT ALLOY; CRACK INITIATION; MICROSTRUCTURE; BEHAVIOR; PHASE; ZN;

D O I：

10.1007/s11661-013-1843-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper investigates the high cycle fatigue properties of a recently developed high-strength cast magnesium alloy [Mg-3Nd-0.2Zn (all compositions in wt pct except when otherwise stated)] with varied Zr contents for grain refinement (NZ30K) and the influence of heat treatment conditions. The NZ30K alloy containing 0.45Zr and heat treated to the peak-aged T6 condition [14 hours at 473 K (200 A degrees C)] shows the highest fatigue strength, about 100 MPa, which is about 25 pct higher than that of commercial AZ91D-T6 alloy. In the absence of casting flaws, the high cycle fatigue properties of the NZ30K alloy strongly depend on its grain size and heat treatment conditions. The dependency of fatigue strength on grain sizes follows the Hall-Petch relationship. The NZ30K alloy also shows a significant response to heat treatments. The fatigue strength increases in a near linear fashion with increasing yield strength of the material through heat treatment.

引用

页码：5202 / 5215

页数：14

共 36 条

[1]

[Anonymous], 2002, GM ENG STANDARDS MAT

[2] The influence of microstructure on the Bauschinger effect in an Al-Si-Mg casting alloy [J].

Caceres, CH ;

Griffiths, JR ;

Reiner, P .

ACTA MATERIALIA, 1996, 44 (01) :15-23

[3] Damage by the cracking of silicon particles in an Al-7Si-0.4Mg casting alloy [J].

Caceres, CH ;

Griffiths, JR .

ACTA MATERIALIA, 1996, 44 (01) :25-33

[4] Effects of solidification rate and ageing on the microstructure and mechanical properties of AZ91 alloy [J].

Cáceres, CH ;

Davidson, CJ ;

Griffiths, JR ;

Newton, CL .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 325 (1-2) :344-355

[5] Ultra-long cycle fatigue of high-strength carbon steels part II: estimation of fatigue limit for failure from internal inclusions [J].

Chapetti, MD ;

Tagawa, T ;

Miyata, T .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 356 (1-2) :236-244

[6] AGE HARDENING IN A MG-9 WT PERCENT A1 ALLOY [J].

CLARK, JB .

ACTA METALLURGICA, 1968, 16 (02) :141-&

[7]

Davis J. R., 1993, ALUMINUM ALUMINUM AL, P113

[8] Influence of heat treatment on fatigue behaviour of high-strength Mg-10Gd-3Y alloy [J].

Dong, J. ;

Liu, W. C. ;

Song, X. ;

Zhang, P. ;

Ding, W. J. ;

Korsunsky, A. M. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (21-22) :6053-6063

[9] Effects of heat treatments on the microstructures and mechanical properties of Mg-3Nd-0.2Zn-0.4Zr (wt.%) alloy [J].

Fu Penghuai ;

Peng Liming ;

Jiang Haiyan ;

Chang Jianwei ;

Zhai Chunquan .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 486 (1-2) :183-192

[10] Zr-containing precipitates in Mg-3wt%Nd-0.2wt%Zn-0.4wt%Zr alloy during SolutionTreatment at 540°C [J].

Fu, Penghuai ;

Peng, Liming ;

Jiang, Haiyan ;

Zhai, Chunquan ;

Ga, X. ;

Nie, J. F. .

2006 BIMW: 2006 BEIJING INTERNATIONAL MATERIALS WEEK, PTS 1-4: MAGNESIUM, 2007, 546-549 :97-+

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