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is visible in the partially melted zone (PMZ) owing to the inhibitory action of the fine dispersed precipitates and the fine-grained microstructure in the as-rolled magnesium alloy sheets. The fusion zone... efficiency. Key words: ZK60 magnesium alloy; fine grain size; laser beam welding; heat affected zone; partially melted zone 1 Introduction Magnesium alloys have become one of the most important......
Partial melting and re-solidification in partially melted zone during gas tungsten arc welding of AZ91 cast alloy T. P. ZHU1, Z. W. CHEN2, W. GAO1 1. Department of Chemical... in constitutional liquation in the original interdendritic regions and in the formation of a partially melted zone (PMZ). In this study, gas tungsten arc welding (GTAW) and partial melting (simulated using......
of the joint showed that the fracture mainly occurred in the partially melted zone (PMZ). Effects of the PMZ on the fracture behavior were systematically studied. Continuous intergranular eutectics... fractured. Key words: 2219 aluminum alloy; tungsten inert gas arc welding; partially melted zone; fracture behavior 1 Introduction Precipitation hardening 2219 aluminum alloy has been widely used......
Abstract: The ZK60 magnesium alloy plates were welded by laser beam welding (LBW) and the microstructures in the partially melted zone (PMZ) of welded joints were investigated. For the as-cast alloy... the size of eutectoid phases and changing their distribution in the base metal. Key words: magnesium alloy; ZK60 alloy; laser beam welding; partially melted zone; liquation cracking 1 Introduction......
J. Cent. South Univ. (2019) 26: 3261-3278 DOI: https://doi.org/10.1007/s11771-019-4251-z Surface integrity and flexural strength improvement in grinding partially stabilized zirconia Javad KHODAII1... and control the surface integrity, flexural strength and grinding cost in grinding partially stabilized zirconia (PSZ) using a diamond grinding wheel. The phase transition and grindability of PSZ were also......
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J. Cent. South Univ. (2017) 24: 1866-1880 DOI: https://doi.org/10.1007/s11771-017-3594-6 Forming condition of transient saturated zone and its distribution in residual slope under rainfall... infiltration process under rainfall conditions was studied in the present work. The emphases are the formation, distribution and dissipation of transient saturated zone. As for the calculation......
Factors governing heat affected zone during wire bonding SUN Li-ning(孙立宁)1, LIU Yue-tao(刘曰涛)1, 2, LIU Yan-jie(刘延杰)1 1. State Key Laboratory of Robotics and System, Harbin Institute of Technology... packaging, heat affect zone (HAZ) is an important factor governing the loop profile of bonding. The height of loop is affected by the length of the HAZ. Factors governing the HAZ were studied......
for Distillation Technology, Tianjin 300072, China) Abstract: The rheological properties of salt-tolerant partially hydrolyzed polyacrylamide (HPAM)solutions with molecular of 2.5×107 g/mol at different... for describing the apparent viscosity and first normal stress difference. The apparent viscosity of salt-tolerant HPAM solutions appears a first Newtonian zone when the shear rate is approximately lower......
Cr_3C_2/Ni_3Al表面堆焊合金层的特征分析 朱晓云1,骆合力2,田志凌2,彭云2,安同邦1 (1.昆明理工大学,云南,昆明,650093;2.钢铁研究总院,北京,100081) 摘要:对Cr_3C_2/Ni_3Al复合堆焊合金层的元素分布,横截面组织和硬度等进行分析和研究.结果表明,堆焊过程中,母材表面半熔化区的形成使堆焊层与母材实现冶金结合,堆焊层金属逆热流方向与母材呈联生方式长大,形成Cr_3C_2强化的Ni_3Al基堆焊层;Ni_3Al基体对Cr_3C_2起到保护和支撑作用,弥散分布的硬质强化相Cr_3C_2,硬度高,抗磨损性好,显著提高堆焊层硬度,并对Ni_3Al基体起......
