Jianzhu Gangjiegou Jinzhan为高强钢在低温环境下的应用提供试验数据和建议，本文重点围绕焊接热输入和接头母材的不同交货状态这两个关键影响因素，选取控轧控冷（TMCP）和调质（QT）两种交货状态的20 mm厚Q550D和Q690D高强钢，分别进行1.0 kJ·mm-1、1.5 kJ·mm-1和1.9 kJ·mm-1三种常见的气保焊焊接热输入的接头制备、韧性试验检测和对比分析，进行了不同交货状态下对接接头的母材、焊缝区和热影响区（HAZ）的夏比冲击功及其变化规律，以及韧脆转变温度的研究。结果表明 ...
崔强 +5 more
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Effect of hydrogen implantation at high temperature on the microstructural evolution of vanadium alloys [PDF]
, 2016 The microstructure evolution of V-4Cr,V-4Ti and V-4Cr-4Ti alloys was studied before and after hydrogen implantation at 500℃. Before hydrogen implantation the matrix of V-4Cr alloy is clean,while parallel and vertical needle-like precipitates exist in the
JIANG Shao-ning +7 more
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Research progress on fracture control of accidental leakage and decompression in CO2 pipeline transportation [PDF]
, 2022 Pipeline is the optimal way in transporting large amounts of carbon dioxide (CO2) in CCUS (carbon capture, utilization and storage) technology industrial chain.
Chen, L +9 more
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Effect of Neutron Fluence Rate on Irradiation Embrittlement of Low-copper RPV Steel [PDF]
The reactor pressure vessels (RPVs) of pressurized water reactor (PWR) nuclear power plants currently in operation and under construction in China are all made of low-alloy ferritic steels obtained by quenching and tempering treatments (which meet the ...
WU Yazhen, LI Guoyun, WANG Haidong, HUANG Juan, ZHANG Haisheng, SUN Kai, LEI Yang, ZHU Lini
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Research Progress on Ferritic/Martensitic Steels for Integrated Fast Reactor Fuel Cladding [PDF]
The integrated fast reactors use metallic fuel， with fuel cladding operating at temperatures ranging from 350 ℃ to 630 ℃ and a service lifespan exceeding 50 000 hours.
Feng Wei, Guan Songyuan, Li Junhong, Shan Pengzhan, Xing Weiwei, Hao Xianchao, Liang Tian, Ma Yingche
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Effects of electron beam welding on the microstructure and impact properties of three reconstituted steels [PDF]
Specimen reconstitution technology is important for the in-service safety of reactor pressure vessels (RPVs) in nuclear power plants. To verify the feasibility of electron beam welding for the restructured specimens, the electron beam welding to ...
DAI Kunjie +8 more
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Preparation and mechanical properties of refractory metal carbide reinforced tungsten‒rhenium alloys [PDF]
Metal carbide doped tungsten‒rhenium alloys were prepared by the traditional pressureless sintering method. The effects of ZrC, TiC, and HfC metal carbides on the microstructures and mechanical properties of tungsten‒rhenium alloys were studied, and the ...
CHEN Fuge +5 more
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Jixie chuandong, 2009 通过铸造选材,热处理工艺制定,常温、低温下的力学性能试验,Boltzmann函数回归分析预测材料韧脆转变温度,并对回转头结构进行有限元分析,研制出了能够满足-45℃工况的低温顶驱齿轮传动装置的关键部件回转头。
王伟, 李云鹏, 刘新状
doaj
Study on mechanical properties, fatigue properties and He+ irradiation behavior of SA508 Gr.3 Cl.1 steel made in China [PDF]
, 2017 SA508Gr.3Cl.1钢是用于制造核电压力容器的主要候选材料，属于不可替换的构件，其寿命决定了整个核电厂的寿命。本论文根据相关国家标准对国产SA508Gr.3Cl.1钢的微观组织、力学性能、疲劳性能和氦离子辐照行为进行了研究与评估。采用光学显微镜、扫描电子显微镜和透射电子显微镜对原始态SA508Gr.3Cl.1钢的微观组织结构进行了观察、分析与表征。通过硬度试验、冲击试验、拉伸试验以及对试样断口的分析，综合评价了SA508Gr.3Cl.1钢的力学性能。测试与分析了SA508Gr.3Cl ...
王驰
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Molecular dynamics simulation of radiation damage in the nickel-based copper nanocluster alloy [PDF]
, 2013 高能粒子辐照可以诱发材料发生肿胀、硬化和脆化等宏观性能改变。实验研究发现镍铜合金比纯镍和纯铜的抗辐照肿胀能力优秀，辐照后合金中的空位团观测数目比纯铜、纯镍少很多，有人推测这是由于镍铜合金中可能存在着铜纳米颗粒相，这些铜纳米颗粒与富镍基体之间的纳米相界作为点缺陷陷阱，并在级联碰撞的冷却过程中进一步促进了点缺陷的复合，致使最终基体中的空位数目大为减少，从而抑制了空位团的形成。 本文根据这一推测，采用分子动力学的方法，试图检验球形铜纳米颗粒与富镍基体之间的共格相界是否对点缺陷发挥了陷阱作用，并给出一些讨论 ...
付玉普
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