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Charge-changing cross section measurements of 300 MeV/nucleon^(28)Si on carbon and data analysis
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作者 王长建 郭戈 +28 位作者 王惠仁 宋雨楠 孙保华 谷畑勇夫 寺嶋知 魏秀琳 徐俊瑶 徐晓栋 张寂潮 郑勇 竺礼华 曹勇 樊广伟 高丙水 韩加星 李光帅 鲁辰桂 齐浩天 秦赟 孙志宇 万鲁平 王凯龙 王世陶 王昕旭 张湄雪 张文文 张小彬 章学恒 周子铖 《Chinese Physics C》 SCIE CAS CSCD 2023年第8期13-21,共9页
Charge-changing cross section(σcc)measurements via the transmission method have recently seen significant progress with the aim of determining the charge radii of exotic nuclei.In this work,we report a newσcc measur... Charge-changing cross section(σcc)measurements via the transmission method have recently seen significant progress with the aim of determining the charge radii of exotic nuclei.In this work,we report a newσcc measurement of 304(9)MeV/nucleon^(28)Si on carbon at the second Radioactive Ion Beam Line in Lanzhou(RIBLL2)and describe the data analysis procedure in detail.This procedure is essential for evaluating the systematic uncertainty in the transmission method.The determinedσcc of 1125(11)mb is found to be consistent with the existing data at similar energies.The present work will serve as a reference forσcc determinations at RIBLL2. 展开更多
关键词 projectile fragmentation transmission method charge-changing cross section particle identi-fication
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Effects of Temperature and Strain Rate on Flow Behavior and Microstructural Evolution of Super Duplex Stainless Steel under Hot Deformation 被引量:7
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作者 Ming MA Hua DING +3 位作者 Zheng-you TANG Jing-wei ZHAO Zhou-hua JIANG guang-wei fan 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2016年第3期244-252,共9页
Hot compression tests were carried out in the temperature range of 1 223-1 473 Kand strain rate range of0.01-30s^-1 to investigate the flow behavior and microstructural evolution of super duplex stainless steel 2507(... Hot compression tests were carried out in the temperature range of 1 223-1 473 Kand strain rate range of0.01-30s^-1 to investigate the flow behavior and microstructural evolution of super duplex stainless steel 2507(SDSS2507).It is found that most of the flow curves exhibit a characteristic of dynamic recrystallization(DRX)and the flow stress increases with the decrease of temperature and the increase of strain rate.The apparent activation energy Qof SDSS2507 with varying true strain and strain rate is determined.As the strain increases,the value of Qdeclines in different ways with varying strain rate.The microstructural evolution characteristics and the strain partition between the two constituent phases are significantly affected by the Zener-Hollomon parameter(Z).At a lower lnZ,dynamic recovery(DRV)and continuous dynamic recrystallization(CDRX)of the ferrite dominate the softening mechanism during the compression.At this time,steady state deformation takes place at the last stage of deformation.In contrast,a higher lnZ will facilitate the plastic deformation of the austenite and then activate the discontinuous dynamic recrystallization(DDRX)of the austenite,which leads to a continuous decline of the flow stress even at the last deformation stage together with CDRX of the ferrite. 展开更多
关键词 duplex stainless steel hot deformation behavior dynamic recovery dynamic recrystallization strain partition
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Descaling Behavior of 430 Hot-rolled Stainless Steel in HCl-based Solution 被引量:2
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作者 Ying-ying YUE Cheng-jun LIU +3 位作者 Pei-yang SHI Mao-fa JIANG Li-yan QIN guang-wei fan 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2016年第3期190-196,共7页
Descaling of hot-rolled stainless steel is generally implemented through pickling process in HNO_3-HF mixed acids,which induces severe environmental concerns of nitrogen oxide(NOx)gases and nitrites.According to the... Descaling of hot-rolled stainless steel is generally implemented through pickling process in HNO_3-HF mixed acids,which induces severe environmental concerns of nitrogen oxide(NOx)gases and nitrites.According to the electrochemical measurement,the mass loss test and the appearance analysis,a new pickling process which employed HCl-based solution was proposed and evaluated to provide theoretical basis for the development of environment-friendly and highly effective pickling process.Under the experimental condition,the HCl-based solution can compete with ordinary HNO_3-HF mixed acids in terms of pickling efficiency,surface integrity and the removal of Crdepleted layer.The descaling process of 430hot-rolled stainless steel in the HCl-based solution consisted of three steps.The descaling solution penetrated the oxide scales into the underlying metal,dissolving the Cr-depleted layer and part of substrates.The oxide scales peeled off from the stainless steel and a polished and smooth surface was exposed.The descaled stainless steel was dissolved uniformly in the HCl-based solution;therefore,the pickling duration was vital for desired surface integrity.Under the static condition,the appropriate descaling time of 430 hotrolled stainless steel in HCl-based solution was 400 s. 展开更多
关键词 DESCALING hot-rolled ferritic stainless steel PICKLING ELECTROCHEMISTRY
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Capture cross sections of ^(15)N(n,γ)^(16)N at astrophysical energies
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作者 guang-wei fan Jun-Bing Ma +4 位作者 Zong-Qiang Sheng Guo-Zhu Shi Feng Tian Jun Wang Chao Zhang 《Chinese Physics C》 SCIE CAS CSCD 2016年第12期65-68,共4页
We have reanalyzed reaction cross sections of 16N on a 12C target. The nucleon density distribution of 16N, especially surface density distribution, was extracted using the modified Glauber model. On the basis of dilu... We have reanalyzed reaction cross sections of 16N on a 12C target. The nucleon density distribution of 16N, especially surface density distribution, was extracted using the modified Glauber model. On the basis of dilute surface densities, the 15N(n, γ)16N reaction is discussed within the framework of the direct capture reaction mechanism. The calculations agree quite well with the experimental data. 展开更多
关键词 capture cross sections reaction cross sections 15N(n γ)16N Glauber model direct capture
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