Development of a Nickel-base Cast Superalloy with High Strength and Superior Creep Properties

来源 :Journal of Materials Science & Technology | 被引量 : 0次 | 上传用户:ywdsar
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Derived from Russian alloy CHS88U, six experimental Ni-base alloys named as A to F in the Ni-Cr-Co-W-Ti-Al-Hf system are designed, evaluated and processed. One of these alloys, F, shows excellent high temperature tensile strength and ductility with superior creep rupture properties. As predicted by using modeling tools such as PHACOM and NEW PHACOMP, there is hardly the tendency for formation of topologically close-packed phase (TCP) phase in alloy F. Furthermore, through microstructural observation, it is also found that no TCP phase is formed in alloy F after long-time exposure at high temperature. So alloy F has well balance of phase stability and mechanical properties in view of application for gas turbines. It is proved that d-electron approach can be applied for design and development of nickel-base superalloys for gas turbine application. Derived from Russian alloy CHS88U, six experimental Ni-base alloys named as A to F in the Ni-Cr-Co-W-Ti-Al-Hf system are designed, evaluated and processed. One of these alloys, F, shows excellent high temperature tensile strength and ductility with superior creep rupture properties. As predicted by using modeling tools such as PHACOM and NEW PHACOMP, there is hardly the tendency for formation of topologically close-packed phase (TCP) phase in alloy F. Furthermore, through microstructural observation , it is also found that no TCP phase is formed in alloy F after long-time exposure at high temperature. So alloy F has well balance of phase stability and mechanical properties in view of application for gas turbines. It is proved that d-electron approach can be applied for design and development of nickel-base superalloys for gas turbine application.
其他文献
天狮稳固建立起国际销售市场,实现全球化,是与天狮“六网互动”的战略分不开的,这一战略在2005年推出,所谓“六网互动”,指的是国际互联网,国际物流网,国际教育网、国际资本
罗伯特·弗罗斯特诗歌中一个突出的主题就是黑暗。黑暗主题在其描写自然及人与人之间关系的诗歌中都有所体现。通过分析弗罗斯特的诗歌,读者能够领悟到弗罗斯特对黑暗之谜的
人是感性的动物,无论多么理性的人,在内心都有一处柔软。赢得共鸣、以情动人,是俘获人心的巧招妙计。  每个人对外界都充满了警戒,就像心中有一把无形的大锁,只有懂得客户的心,理解客户的真实感受和需要,才能打开客户心门。懂一点心理学,在与客户交往的过程中恰当运用一些技巧,才能起到四两拨千斤的效果。一味蛮干、真心直率地对待客户反而容易引起客户的误会和反感。  人际关系的复杂程度不亚于战争。古人说“上兵伐谋
家庭是幼儿园重要的合作伙伴,应本着尊重、平等、合作的原则,争取家长的理解、支持和主动参与,并积极支持、帮助家长提高教育能力。幼儿园教育与家庭教育有着各自的优势,且都
国内外众多研究表明:3~8岁是幼儿阅读能力发展的关键期。我国的《幼儿园教育指导纲要》明确提出:“要培养幼儿对生活中常见的简单标记和文字符号的兴趣;利用图书、绘画和其他
内部会计控制是指企业为了提高会计信息质量,防止并及时发现、纠正舞弊行为,保护资产的安全、完整,确保有关法律法规和规章制度的贯彻执行等而制定和实施的一项控制方法和程
在大力提倡并切实推行新课程教改的现代语文教学中,正确对待和巧妙运用竞争与合作,将有利于学生各项能力的提高及各种素质的养成,从而适应未来社会对优秀人才的渴求。一、万
许多公司最终表现欠佳的主要原因在于,他们严重地高估了自己提供客户所需产品、服务的能力。77%的企业高管认为本公司提供了最佳客户体验,但仅有6%的客户认同自然灾害、周期
说到Lan Party.较为资深的游戏玩家可能会比较熟悉。国外一些游戏发烧友经常举行这样的聚会:很多玩家携带自己的电脑,在聚会场所组建局域网,进行网上游戏,并且面对面地交流
为什么在我国,众多品牌都像流星般短暂“,知名品牌”各领风骚两三年?根据多年的研究表明:没有进行品牌更新,导致品牌老化是问题的根源。品牌只有紧跟时代节奏,才能永葆青春。