andhardness hasanincreasingtrendwiththeincreaseofdeformation , whichhasasignificantdeformation strengtheningeffect. Keywords : 20Gsteel ; fieldmicroscope ; tensile ; grainsize 20G 为锅炉用耐热钢之一,广泛应用于制造注 汽锅炉的炉管,金相组织为铁素体 + 珠光体,具有良 好的韧性、塑性和焊接性 [1] 。很多研究...
The changes in particles size and hardness of sintered alumina can be investigated via scanning electron microscope and hardness test respectively to identical the effect of grains size on hardness. As conclusion, increasing milling time resulted in a finer grain sizes and increase in...
HARDNESS, RETAINED AUSTENITE AND GRAIN SIZE AS FUNCTION OF AUSTENITIZING TEMPERATURE assabth.com 硬度、殘留沃斯田鐵及晶粒大小會因 沃斯 田鐵 化的溫度不同而改變。 assabth.com In particular, the map sheets included cross-sections for the first time, and showed the grain size distribution of...
By using the developed mathematical models, grain size and hardness of the weld joints can be predicted with 99% confidence level. The developed mathematical models have been optimized using Hooke and Jeeves algorithm to minimize grain size and maximize the hardness. 展开 关键词: Pulsed Current ...
The detailed profiles of the grain size and hardness are displayed in Fig. 1c and d. In spite of the distinct difference in the gradient profiles of these two specimens, the minimum and maximum grain sizes and hardness were identical for both samples. As the grain size continuously increased...
a海外には出荷できない 它在外国不可能运送[translate] athat of the undeformed counterparts. Grain sizes measured by XRD are in the range 10–200 nm with[translate] aHardness, grain size distributions, dislocation densities and densities of planar defects including[translate]...
grain sizehardnessparticle sizepowder technology/ grain size dependencepressureless sinteringhardnessPressureless sintered alumina compacts with a submicrometer microstructure exhibit a hardness that approaches or even exceeds the level of advanced hotpressed composites of Al 2 O 3 + 35 vol% TiC, whereas ...
A model describes the load (size) effect in hardness assuming an increasing microplasticity when for the extension of the plastic zone growth and multiplication of pre-existing dislocations are more effective than the generation of new lattice defects in the surrounding virgin material. If similar sc...
摘要: The Effect of Solute Elements on Hardness and Grain Size in Platinum Based Binary Alloys MURAKAMI Taichi , SAHARA Ryoji , HARAKO Daisuke , AKIBA Masahiro , NARUSHIMA Takayuki , OUCHI Chiaki Materials Transactions 49(3), 538-547, 2008-03-01...
摘要: The hardness measured by the nanosize indenter und 关键词:Size effect Nanocrystal Hardness Molecular simulation 年份: 2013 收藏 引用 批量引用 报错 分享 全部来源 求助全文 国家科技图书文献中心 (权威机构) 相似文献 参考文献Grain size effect on the hardness of nanocrystal measured by the nanosize...