The independent influence of microstructural features on fracture toughness of TC21alloy with lamellar microstructure was investigated.Triple heat treatments were designed to obtain lamellar microstructures with diffe...The independent influence of microstructural features on fracture toughness of TC21alloy with lamellar microstructure was investigated.Triple heat treatments were designed to obtain lamellar microstructures with different parameters,which were characterized by OM and SEM.The size and content ofαplates were mainly determined by cooling rate from singleβphase field and solution temperature in two-phase field;while the precipitation behavior of secondaryαplatelets was dominantly controlled by aging temperature in two-phase field.The content and thickness ofαplates and the thickness of secondaryαplatelets were important microstructural features influencing the fracture toughness.Both increasing the content ofαplates and thickeningαplates(or secondaryαplatelets)could enhance the fracture toughness of TC21alloy.Based on energy consumption by the plastic zone of crack tip inαplates,a toughening mechanism for titanium alloys was proposed.展开更多
在经济全球化的背景下,企业正面临着前所未有的经济和政治不确定性的商业环境,企业正变得更加脆弱,其生存也面临着重大威胁。研究表明,组织韧性是一种有效的生存和发展方式。企业为了生存和繁荣可以通过构建组织韧性来应对不确定性。然...在经济全球化的背景下,企业正面临着前所未有的经济和政治不确定性的商业环境,企业正变得更加脆弱,其生存也面临着重大威胁。研究表明,组织韧性是一种有效的生存和发展方式。企业为了生存和繁荣可以通过构建组织韧性来应对不确定性。然而,考虑到“组织韧性”还是一个相对新的概念,在理解和应用该概念方面仍然缺乏共识。这些差异和定义混乱阻碍了韧性研究成果的评估和有效性。基于此,本文对EBSCOHOST、Web of Science和Scopus数据库进行系统的文献搜索、梳理和述评,目的是解决以下方面的问题:①什么是组织韧性?②影响组织韧性的因素是什么?③如何评估组织韧性?如今,组织正处于日益复杂的环境中,不可避免地面临更加频繁和更大的危机,威胁着它们的持续运营和绩效。因此,本研究不仅为商界提供了有效应对不确定性的途径,还为学术界进一步探索组织韧性研究提供参考。展开更多
文摘The independent influence of microstructural features on fracture toughness of TC21alloy with lamellar microstructure was investigated.Triple heat treatments were designed to obtain lamellar microstructures with different parameters,which were characterized by OM and SEM.The size and content ofαplates were mainly determined by cooling rate from singleβphase field and solution temperature in two-phase field;while the precipitation behavior of secondaryαplatelets was dominantly controlled by aging temperature in two-phase field.The content and thickness ofαplates and the thickness of secondaryαplatelets were important microstructural features influencing the fracture toughness.Both increasing the content ofαplates and thickeningαplates(or secondaryαplatelets)could enhance the fracture toughness of TC21alloy.Based on energy consumption by the plastic zone of crack tip inαplates,a toughening mechanism for titanium alloys was proposed.
文摘在经济全球化的背景下,企业正面临着前所未有的经济和政治不确定性的商业环境,企业正变得更加脆弱,其生存也面临着重大威胁。研究表明,组织韧性是一种有效的生存和发展方式。企业为了生存和繁荣可以通过构建组织韧性来应对不确定性。然而,考虑到“组织韧性”还是一个相对新的概念,在理解和应用该概念方面仍然缺乏共识。这些差异和定义混乱阻碍了韧性研究成果的评估和有效性。基于此,本文对EBSCOHOST、Web of Science和Scopus数据库进行系统的文献搜索、梳理和述评,目的是解决以下方面的问题:①什么是组织韧性?②影响组织韧性的因素是什么?③如何评估组织韧性?如今,组织正处于日益复杂的环境中,不可避免地面临更加频繁和更大的危机,威胁着它们的持续运营和绩效。因此,本研究不仅为商界提供了有效应对不确定性的途径,还为学术界进一步探索组织韧性研究提供参考。
