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Influence of refined hierarchical martensitic microstructures on yield strength and impact toughness of ultra-high strength stainless steelHaiwen Luo1,Xiaohui Wang1,2,Zhenbao Liu2,Zhiyong Yang21..., were refined to various extents by employing different thermomechanical processes and then carefully characterized. Their relation to yield strength and impact toughness was analyzed. We conclude......
Meng, ZHANG Xian-shang. Effect of loading rates on crack propagating speed, fracture toughness and energy release rate using single cleavage trapezoidal open specimen under impact loads [J]. Journal... or partially unclear aspects, such as crack propagating speed, crack arrest characteristic and propagation toughness under different loading rates. Therefore, in this study, the impact dynamic experiments......
Trans. Nonferrous Met. Soc. China 26(2016) 956-965 Effect of various melt and heat treatment conditions on impact toughness of A356 aluminum alloy M. AMNE ELAHI, S. G. SHABESTARI Center of Excellence... refinement of as-cast alloy does not improve the impact toughness as the modification does. While, simultaneous grain refinement and modification provide higher impact toughness in comparison with individual......
Effects of rare earth on microstructure and impact toughness of low alloy Cr-Mo-V steels for hydrogenation reactor vesselsZhonghua Jiang1,2,Pei Wang1,2,Dianzhong Li1,2,Yiyi Li1,21. Shenyang National...="ChDivSummary" name="ChDivSummary">The effects of rare earth(RE) on the microstructure and impact toughness of low alloy Cr-Mo-V bainitic steels have been investigated where the steels have RE content......
Determining role of heterogeneous microstructure in lowering yield ratio and enhancing impact toughness in high-strength low-alloy steelYi-shuang Yu1,Bin Hu1,Min-liang Gao1,Zhen-jia Xie1,Xue-quan... consisting of soft intercritical ferrite and hard tempered martensite, resulting in a low yield ratio(YR) and high impact toughness in a high-strength low-alloy steel. The initial yielding and subsequent......
稀土铈对1Cr18Mn8Ni5N不锈钢力学性能的影响董方1,蔡国君2,储少军3(1.内蒙古自治区包头市内蒙古科技大学材料与冶金学院2.抚顺特殊钢股份有限公司,辽宁抚顺 1130013.北京科技大学 冶金与生态学院,北京 100083)摘 要:通过金相,扫描电镜观察,能谱分析和力学性能检测,研究了稀土Ce对1Cr18Mn8Ni5N不锈钢力学性能的影响.在相同的热处理工艺条件下,分别加入不同含量的稀土Ce,与不添加稀土Ce的1Cr18Mn8Ni5N不锈钢的力学性能进行比较.研究结果表明:稀土Ce加入量在适当的范围内......
were investigated by SEM, EDS and XRD. The results show that small addition of Ce can increase the impact toughness and the wear resistance of high-boron high speed steel, the impact toughness ak... boro-carbide increases, the distribution of boro-carbide becomes more uniform , and primary austenite grain is refined. Key words: high speed steel; B; Ce; microstructure; impact toughness 利用硼在α-Fe和γ-Fe中......
line. The results show that every layer can be eligible and the TA2 joints welded by narrow gap TIG welding are of high-quality. Furthermore, the impact toughness of welding joints in the areas of welded foregoing increase obviously because of being compressed, leading to plastic distortion. The reasons that the impact toughness can be increased were analyzed also. Key words: titanium alloy; thick......
and the lowest elongation to failure of 5.46%. Impact tests were performed at room temperature (27 °C), -70 and -130 °C, respectively. Impact toughness decreases with decreasing the impact temperature. The impact specimens at -130 °C show the lowest impact toughness of 3.06 J/cm2. Key words: AZ91D magnesium alloy; solid recycling process; mechanical property; impact toughness 1 Introduction......
) alloys were investigated by optical microscopy, scanning electron microscopy and X-ray diffractometry. Meanwhile, the tensile mechanical property and impact toughness at ambient temperature were... phase with high thermal stability increases gradually. The tensile mechanical property and impact toughness on the whole are enhanced gradually. Tensile strength σb, elongation δ and impact toughness......
