期刊文献+

Pt5Rh ODS复合材料的高温蠕变性能研究(英文) 被引量:5

The High Temperature Creep Behavior of Dispersion Strengthened Pt5Rh Composite
原文传递
导出
摘要 采用大塑性变形法制备氧化物弥散强化铂铑(Pt5RhODS)复合材料,对材料进行了高温蠕变试验。结果表明,复合材料在高温低应力条件下,表现出的名义应力指数随温度变化较小,名义激活能高于纯Pt和Pt10Rh合金,而且比常规合金材料具有更好的高温蠕变性能。复合材料的高温蠕变性能用晶界反应控制来解释,说明复合材料的蠕变受到扩散蠕变机制控制。复合材料的蠕变断裂行为符合连续蠕变损伤中的内截面损伤模型,蠕变断裂特征为沿晶断裂。 Adopting a large plastic deformation process, the dispersion strengthened Pt5Rh composite was prepared. The microstructure of the composite was analyzed by SEM, and the high temperature creep tests were carried out by a self-made high temperature creep test facility. The experiment results show that at high temperature and under low load the stress exponent of the dispersion strengthened Pt5Rh alloy does not change obviously with increasing of the temperature, and its apparent activation energy is much higher than those of pure platinum and Pt10Rh alloy. The high temperature creep properties of the dispersion strengthened Pt5Rh are better than those of conventional alloys. The creep mechanism of the dispersion strengthened Pt5Rh belongs to the proliferation creep mechanism; the creep fracture at high temperatures presents the brittle fracture.
出处 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2011年第10期1713-1717,共5页 Rare Metal Materials and Engineering
基金 Supported by the Foundation of Yunnan Province (2007E125M) the National Basic Research Program of China (2008CB617609) the Middle-Aged Academic Leaders Reserve Personnel Items of Yunnan Province (2006py01-42)
关键词 Pt5RhODS复合材料 名义应力指数 名义激活能 扩散蠕变 内截面损伤模型 dispersion strengthened Pt5Rh stress exponent apparent activation energy proliferation creep brittle fracture
  • 相关文献

参考文献10

  • 1Johnson Matthey. UKPatent, 1340076[P], 1973.
  • 2Owens-Coming Fiberglass Corporation. USA Patent, WO81/00977[P], 1981.
  • 3Heraeus GmbH W C & Co K G. USPatent, 945856[P], 2002.
  • 4Tanaka Kikinzoku Kogyo K K Co, Ltd (Japan). China Patent(中国专利), CN1383456[P], 2002.
  • 5KunmingInstituteofPreciousMetals(昆明贵金属研究所).China Patent(中国专利),CN101058858[P],2007.
  • 6ZhangJunshan(张俊善).The Material of High-Temperature Deformation and Fracture(材料的高温变形与断裂)[M].Beijing:Science Press,2007.
  • 7Hael Mughrabi Weiheim ed. Plastic Deformation and Fracture of Materials[M]. New York: Cambridge: VCH, Materials Science and Technology, 1993.
  • 8TuShandong(涂善东).High Temperature Structural Integrity(高温结构完整性原理)[M].Beijing:SciencePress,2003.
  • 9Harris J E, Jones R B. Nucl Mater[J], 1963, 10(4): 360.
  • 10Kachanov L M. Izviiestia Akademii Nauk SSSR, Otdelenie Tekhnieheskikh Nauk[J], 1958, 8(1): 2.

同被引文献146

引证文献5

二级引证文献8

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部