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INVESTIGATION OF MECHANICAL PROPERTIES AND PHYSICAL METALLURGY OF AIRCRAFT ALLOYS AT VERY LOW TEMPERATURES Part3. Effect of Notches on Static Tensile and Fatigue Strength at -3200F (-1960C)

机译：非常低温下飞机合金的力学性能和物理冶金的研究第3部分。缺口对-3200F（-1960C）静态拉伸和疲劳强度的影响

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The effect of notches on the tensile and fatigue properties at 25℃ and -196℃ of ten aircraft structural alloys was investigated.nGeneral conclusions resulting from the investigation were that decreasing temperature causes increasing strength, both tensile and fatigue, for notched specimens as well as unnotched specimens, except for SAE 4340 steel which decreased slightly in both tensile and fatigue strength for notched specimens.nHardness values increased and impact values, except for aluminum and magnesium alloys and 18-8 steel, decreased with decreasing temperatures.

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J. W. Spretnak; M. G. Fontana;
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年度 1950
页码 1-63
总页数 63
原文格式 PDF
正文语种 eng
中图分类工业技术;
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机译：机械合金氧化物弥散强化铁合金的拉伸性能第2部分-屈服强度的物理解释。
2. EFFECT OF LOW TEMPERATURES ON MECHANICAL AND PHYSICAL PROPERTIES OF HIGH-STRENGTH NICKEL ALLOY EK61-ID AND STAINLESS MARAGING STEEL EK49-VD [J] . K. I. Nedashkovskii, O. N. Zheleznyak, B. M. Gromyko Metal Science and Heat Treatment . 2003,第5a6期

机译：低温对高强度镍合金EK61-ID和不锈硬质合金EK49-VD力学和物理性能的影响
3. Investigation of structural stability, physical and mechanical properties of nitrogen-free and nitrogen-containing austenitic alloys of the Fe-Cr-Mn system at low temperatures [J] . G. Grikurov, I. Baratashvili, L. Skibina, Journal de Physique, IV: Proceedings of International Conference . 2003,第0期

机译：Fe-Cr-Mn系低温无氮含氮奥氏体合金的结构稳定性，物理力学性能研究
4. Physical Model to Combine Fatigue Strength and Static Mechanical Property for Metallic Materials [C] . Yuki NAKAMURA, Kazutaka MUKOYAMA, Koushu HANAKI, 信頼性シンポジウム . 2016

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6. Metallurgical and mechanical properties of laser welded high strength low alloy steel [O] . Ramachandran Oyyaravelu, Palaniyandi Kuppan, Natarajan Arivazhagan 2016

机译：激光焊接高强度低合金钢的冶金和力学性能
7. Mechanical properties of various concrete after high temperature exposure Mechanical property of various types of concrete after high temperature exposure is investigated. Considering compressive strength requirement for a vertical element in high rise building, concrete specimens with various design strengths of 35, 80, 100, and 150 MPa were tested. Particularly, the influence of incorporated steel fiber on fire resistance is of interest in this study. Experimental results show that the fire resistance depends on the design strength and steel fiber content. Normal strength concrete (NSC) of a design strength of 35 MPa or high performance concrete (HPC) of 80-100 MPa does not spall when exposed to 100-400 °C of temperature. However, an explosive spalling occurs at 300 °C when the HPCs contain 1 vol. of steel fiber. Ultra-high performance concrete (UHPC) of a design strength of 150 MPa and 1.5 vol. of steel fiber also shows dramatic spalling at 300 °C. The experimental results found in this study can contribute to a better understanding of the behaviors of HPC and UHPC under fire and the role of steel fiber on the fire resistance. [O] . 2017

机译：研究了高温暴露后各种混凝土高温曝光机械性能各种混凝土的机械性能。考虑到高层建筑中垂直元件的抗压强度要求，测试了35,80,100和150MPa各种设计强度的混凝土试样。特别是，在这项研究中，掺入钢纤维对耐火性的影响。实验结果表明，耐火性取决于设计强度和钢纤维含量。在暴露于100-400°C的温度时，80-100MPa的设计强度为35MPa或高性能混凝土（HPC）的正常强度混凝土（NSC）不会击落。然而，当HPC含有1体积的钢纤维的百分比时，爆炸性剥落发生在300℃。超高性能混凝土（UHPC）的设计强度为150 MPa和1.5 Vol。钢纤维的百分比也显示出300℃的剧烈剥落。本研究中发现的实验结果可以有助于更好地了解在火灾中的HPC和UHPC的行为以及钢纤维对耐火性的作用。
8. The Mechanical Metallurgy of Directionally Solidified Composites:Strengthening Fundamentals,Tensile,Creep,Fatigue and Toughness Properties. [R] . lawley, a. 1974

机译：定向凝固复合材料的机械冶金：强化基础，拉伸，蠕变，疲劳和韧性。

INVESTIGATION OF MECHANICAL PROPERTIES AND PHYSICAL METALLURGY OF AIRCRAFT ALLOYS AT VERY LOW TEMPERATURES Part3. Effect of Notches on Static Tensile and Fatigue Strength at -3200F (-1960C)

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