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| 1 | Laser dissimilar welding of CoCrFeMnNi-high entropy alloy and duplex stainless steel显示文摘High entropy alloys(HEAs)have superior mechanical properties that have enabled them to be used as structural materials in nuclear and aerospace applications.As a dissimilar joint design is required for these applications,we created a dissimilar joint between CoCrFeMnNi-HEA and duplex stainless steel(DSS)through laser beam welding;a technique capable of producing a sound joint between the two materials.Micro structure examination using SEM/EBSD/XRD analysis revealed that the weld metal(WM)exhibits an FCC phase regardless of the postweld heat treatment(PWHT)temperature(800 and 1000℃)without forming detrimental intermetallic compounds or microsegregation.The heat-affected zone of the CoCrFeMnNi-HEA showed CrMn oxide inclusions while that of the DSS showed no inclusions.Moreover,a lower hardness was recorded by the WM compared to the base metal after welding.After PWHT,the hardness of the WM,CoCrFeMnNi-HEA,and DSS decreased with an increase in the PWHT temperature.However,the decrease in the hardness of the HEA was more significant than in the WM and DSS.The cause for this reduction in hardness was attributed to recrystallization and grain growth.In addition,a strength of 584 MPa with low ductility was recorded after welding.The obtained strength was lower than that of the BMs,but comparable to that of the welded CoCrFeMnNi-HEA.The application of PWHT resulted in over a 20%increment in ductility,with only a marginal reduction in strength.The defo rmation mechanism in the as-weld joint was mainly dominated by dislocation while that for the PWHT joint was twinning.We propose laser beam offset welding as a technique to improve the mechanical properties of the dissimilar joint,which will be the subject of future studies. | Nana Kwabena Adomako Giseung Shin Nokeun Park Kyoungtae Park Jeoung Han Kim | 2021 | Journal of Materials Science & Technology2021，，26： | 6 |
| 2 | Spray drying an appropriate technology for food and pharmaceutical industry显示文摘 | AFOAKWAH A N ADOMAKO C OWUSU J | 2012 | J Environ Sci Comp Sci and Eng Technol2012，1，： | 1 |
| 3 | Geo- graphical variation in total and inorganic ar- senieeontent of polished (white) rice 显示文摘 | Meharg A A William P N Adomako E | 2009 | Envi- ron Sei Teehnol2009，43，5： | 1 |
| 4 | Effect of organicmatter amendment, arsenic amendment and water managementregime on rice grain arsenic species 显示文摘 | Norton G J Adomako E E Deacon C M ef al | 2013 | EnvironmentalPollution2013，177，： | 1 |
| 5 | Increase in Rice Grain Arsenic for Regions of Bangladesh Irrigating Paddies With Elevated Arsenic in Groundwaters 显示文摘 | WILLIAMS P N ISLAM M R ADOMAKO E E | 2006 | Environmental Science and Technology2006，40，16： | 1 |
| 6 | Geo- graphical variation in total and inorganic arsenic con- tent of polished (white) rice 显示文摘 | Meharg A A Williams P N Adomako E | 2009 | Environmental Science & Technology2009，43，5： | 1 |
| 7 | 查看详情显示文摘 | Adomako M St-Hilaire S Zheng Y | | 0，，： | 1 |
| 8 | Geographical variation in total and inorganic arsenic content of polished (white) rice显示文摘 | Meharg A A Williams P N Adomako E | 2009 | Environ Sci Technol2009，43，： | 1 |
| 9 | Biomonitoring of atmospheric trace element deposition around an industrial town in Ghana显示文摘 | NYARKO B J B ADOMAKO D SERFOR-ARMAH Y | | 0，，09： | 1 |
| 10 | Baseline soil variation is a major factor in arsenic accumulation in Bengal Delta paddy rice 显示文摘 | Lu Y Adomako E E Solaiman A | 2009 | Environmental Science & Technology2009，43，6： | 1 |
| 11 | Increase in rice grain arsenic for regions of Bangladesh irrigating paddies with elevated arsenic in groundwaters显示文摘 | WILLIAMS P N ISLAM M R ADOMAKO E E | 2006 | Environ Sci Technol2006，40，16： | 1 |
| 12 | Oral DNA vaccination ofrainbow trout,Oncorhynchus mykiss(Walbaum),against infectioushaematopoietic necrosis virus using PLGAnanoparticles显示文摘 | ADOMAKO M ST-HILAIRE S ZHENG Y | 2012 | J Fish Dis2012，35，3： | 1 |
| 13 | Effects of clonal integration, nutrients and cadmium on growth of the aquatic macrophyte Pistia stratiotes显示文摘许多湿地同时遭受养分和有毒金属的污染,其植被多数为克隆植物。我们假设,富养化和克隆整合可以通过增加植物的生长来提高对有毒金属污染的植物修复能力,即使在毒性胁迫环境下也是如此。为验证此假说,我们将常见、广布的匍匐茎漂浮植物大薸(Pistia stratiotes L.)的单个分株种植在两种不同的养分条件下和两种镉污染处理(无镉或含0.6 mg L^(-1)的镉)中42天。通过保持或切断母株与其后代分株之间的连接来维持或阻止克隆整合,并通过保留或移除切断后的后代分株来控制克隆内竞争的有无。由于高养分条件下克隆后代分株的数量增加了一倍,因此镉处理下大薸的生物量在高养分条件下几乎是在低养分条件下的两倍。切断匍匐茎连接对整个克隆(母株和后代分株的总和)的生物量没有影响。切断连接后去除后代分株对镉污染下母株的生物量没有显著的影响,但却显著增加了无镉污染下母株的生物量。这些研究结果支持富养化可以提高水生植物对有毒金属污染的修复能力这一假说,但并不支持克隆整合有利于植物修复的假说。因此,水生植物(如大薸)可能有助于对同时遭受有毒金属和养分污染的湿地进行修复,但克隆片段化对植物的这种修复能力可能没有显著影响。 | Michael Opoku Adomako Peter Alpert Dao-Lin Du Fei-Hai Yu | 2020 | Journal of Plant Ecology2020，13，6： | 1 |
| 14 | Oral DNA vaccination of rainbow trout,Oncorhynchus mykiss (Walbaum),against infectious haematopoietic necrosis virus using PLGAnanoparticles显示文摘 | Adomako M St-Hilaire S Zheng Y | 2012 | J Fish Dis2012，35，3： | 1 |
| 15 | Microwave assis- ted extraction (MAE) of antioxidant constituents in plant mate rials 显示文摘 | Afoakwah A N Owusu J Adomako C | 2012 | Global Journal of Bio-Science ~> Biotechnology2012，1，2： | 1 |
| 16 | Oral DNA vacci- nation of rainbow trout, Oncorhynchus mykiss ( Walbaum ), a- gainst infectious haematopoietic necrosis virus using PLGA nanoparticles显示文摘 | ADOMAKO M HILAIRE S ZHENG Y | 2012 | J Fish Dis2012，35，3： | 1 |
| 17 | Geo- graphical variation in total and inorganic arsenic con- tent of polished (white) rice 显示文摘 | Meharg A A Williams P N Adomako E | 2009 | Environmental Science & Technology2009，43，5： | 1 |
| 18 | The hydrochemistry of groundwater in the Densu river basin, Ghana 显示文摘 | Fianko J R Adomako D Osae S | 2010 | Environ Monit Assess2010，167，14： | 1 |
| 19 | The hydrochemistry of groundwater in the Densu River Basin,Ghana显示文摘 | Joseph Richmond Fianko Dickson Adomako Shiloh Osae | 2010 | Environ Monit Assess2010，167，： | 1 |
| 20 | The hydrochemistry of groundwater in the Densu River Basin, Ghana 显示文摘 | Joseph Richmond Fianko Dickson Adomako Shiloh Osae | 2010 | Environ Monit Assess2010，167，： | 1 |
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