Mg-12Gd-3Y-0.5Zr镁合金的不同疲劳行为
Different Fatigue Behaviors of Mg-12Gd-3Y-0.5Zr Magnesium Alloy
查看参考文献17篇
文摘
|
对轧制态Mg-12Gd-3Y-0.5Zr镁合金的室温低周、超高周疲劳,高温等温疲劳以及热机械疲劳性能进行了研究,并对其疲劳失效机制进行了分析。结果表明:对室温低周疲劳、超高周疲劳来说,其失效机制主要是夹杂或大的第二相引起的疲劳开裂;对于低周疲劳,裂纹萌生于表面或亚表面,而对于超高周疲劳,裂纹起源于内部;该合金的高温等温疲劳与热机械疲劳断裂裂纹都萌生于表面,其疲劳机制为循环滑移和氧化物夹杂共同作用;该合金在室温到200 ℃有良好的抗拉强度与疲劳强度;反相位热机械疲劳寿命比同相位的高。 |
其他语种文摘
|
Room temperature low cycle fatigue,very high cycle fatigue,high temperature isothermal fatigue and thermo-mechanical fatigue properties of the as-rolled Mg-12Gd-3Y-0.5Zr magnesium alloy were investigated.The fatigue failure mechanism was analyzed.The results show that for room temperature low cycle fatigue and very high cycle fatigue,the failure was caused by the fatigue cracks resulted from the inclusions or large-sized secondary phases.The cracks initiated from the surface or sub-surface for low cycle fatigue,however,for very high cycle fatigue the internal cracking was the initiation.Both high temperaturei sothermal fatigue crack and thermomechanical fatigue crack originated from the surface.The interaction of cyclic slip and oxide inclusions was the main fatigue mechanism.The alloy had excellent tensile strength and fatigue strength from room temperature to 200 ℃.The opposed phase thermo-mechanical fatigue lifetime was longer than the in-phase one thermo-mechanical fatigue lifetime. |
来源
|
机械工程材料
,2011,35(4):41-45,68 【核心库】
|
关键词
|
镁合金
;
低周疲劳
;
超高周疲劳
;
等温疲劳
;
热机械疲劳
;
疲劳机制
|
地址
|
1.
中国科学院金属研究所, 沈阳材料科学国家实验室, 沈阳, 110016
2.
上海交通大学, 轻合金精密成型国家工程研发中心, 上海, 200020
|
语种
|
中文 |
文献类型
|
研究性论文 |
ISSN
|
1000-3738 |
学科
|
金属学与金属工艺 |
文献收藏号
|
CSCD:4289886
|
参考文献 共
17
共1页
|
1.
KIM W J. Superplasticity in thin magnesium alloy sheet and deformation mechanism maps for magnesium alloys at elevated temperatures.
Acta Materialia,2001,49:3337-3345
|
被引
64
次
|
|
|
|
2.
IDRIS M H. Processing and evolution of investment cast magnesium-base alloy.
Transactions of American Foundrymen's Society,1996,104(20/23):237-244
|
被引
1
次
|
|
|
|
3.
MOHRI T. Microstructure and properties of an Mg-4Y-3RE alloy processed by thermomechanical treatment.
Materials Science and Engineering A,1998,257:287-294
|
被引
21
次
|
|
|
|
4.
ANYANWU I A. Aging characteristics and high temperature tensile properties of Mg-Gd-Y-Zr alloys.
Materials Transactions,2001,42:1206-1201
|
被引
81
次
|
|
|
|
5.
BAI J. Microstructure and tensile creep behavior of Mg-4AI based magnesium alloys with alka line-earth elements Sr and Ca additions.
Materials Science and Engineering A,2006,419:181-188
|
被引
41
次
|
|
|
|
6.
HAN B Q. High-temperature behavior of a cryomilled ultrafine-grained Al-7.5% Mg alloy.
Materials Science and Engineering A,2005,410:417-421
|
被引
3
次
|
|
|
|
7.
ZHANG P. Creep behavior of the die-cast Mg-Al alloy AS21.
Scripta Materialia,2005,52(4):277-282
|
被引
26
次
|
|
|
|
8.
GAO Y. Effects of heat treatments on microstructure and mechanical properties of Mg-15Gd-5Y-0.5Zr alloy.
Journal of Rare Earths,2008,26:298-302
|
被引
23
次
|
|
|
|
9.
YIN S M. Cyclic deformation behavior of as-extruded Mg-3%Al-1%Zn.
Scripta Materialia,2008,58:751-754
|
被引
23
次
|
|
|
|
10.
尹树明. Ilia镁合金AZ31D的拉压不对称性和组织演化.
材料研究学报,2007,21(增刊):38-42
|
被引
3
次
|
|
|
|
11.
YANG X M. Tensile and isothermal behaviors of Mg-12Gd-3Y-0.5Zr alloy at high temperature.
Journal of Materials Science and Technology,2009,25(6):731-737
|
被引
3
次
|
|
|
|
12.
HANTZSCHE K. Effect of rare earth additions on microstructure and texture development of magnesium alloy sheets.
Scripta Materialia,2010,63(7):725-730
|
被引
79
次
|
|
|
|
13.
MACKENZIE L W F. The influences of alloying additions and processing parameters on the rolling microstructures and textures of magnesium alloys.
Materials Science and Engineering A,2008,480:189-193
|
被引
22
次
|
|
|
|
14.
OKAYASU M. Fatigue properties of ultra-fine grained dual phase ferrite/martensite low carbon steel.
International Journal of Fatigue,2008,30:1358-1365
|
被引
5
次
|
|
|
|
15.
YANG F. Crack initiation mechanism of extruded AZ31 magnesium alloy in the very high cycle fatigue regime.
Materials Science and Engineering A,2008,491:131-136
|
被引
25
次
|
|
|
|
16.
HUANG X Y. Simplified three-dimensional model for fatigue crack initiation.
Engineering Fracture Mechanics,2007,74:2981-2991
|
被引
3
次
|
|
|
|
17.
XIAO W M. Effect of rare earth on mechanical creep-fatigue property of SnAgCu solder joint.
Journal of Alloys and Compounds,2009,472:198-202
|
被引
9
次
|
|
|
|
|