【摘 要】
：
The transformation behavior of Nb–V–Ti microalloyed ultra-high strength steel during continuous cooling is investigated by Gleeble-1500 thermal mechanical simulator.Thermal dilation curves were measur
【机 构】
：
State Key Lab of Hydraulic Engineering Simulation and Safety,School of Materials Science & Engineeri
【出 处】
：
第13届中日双边先进能源系统和聚变裂变工程材料会议(CIS-13)
论文部分内容阅读
The transformation behavior of Nb–V–Ti microalloyed ultra-high strength steel during continuous cooling is investigated by Gleeble-1500 thermal mechanical simulator.Thermal dilation curves were measured at different cooling rates,based on which continuous cooling transformation(CCT)curve is established.The microstructure at slow cooling rate,primarily consists of polygonal ferrite,pearlite and lower bainite,while at intermediate cooling rate except for dominated lower bainite,small amount of polygonal ferrite can also be observed.At higher cooling rate,martensite lath is obtained.The nano-sized precipitates at slow cooling rate include M23C6,M2C,M3C,MX(I)and MX(II),and at intermediate cooling rate and higher cooling rate,the type of precipitates were similar,M3C,MX(I)and MX(II).
其他文献
For outstanding mechanical properties,the amorphous materials attracted the interests of scientists all over the world in recent years.Compared to corresponding crystalline alloys,the strength,hardnes
Aimed at clarifying the δ-ferrite formation in fusion welding of ferritic/martensitic steels,effects of cooling rates on the δ/γ transformation and martensitic transformation in a modified ferritic he
Tungsten(W)is chosen as the leading candidate for plasma facing material(PFM)in fusion devices.However,W has several disadvantages,such as high ductile–brittle transition temperature(DBTT)and recrysta
Continuous SiC fiber reinforced SiC matrix(SiC/SiC)composites are considered as one of promising materials for the high temperature structural components of fusion reactor,because of their enhanced fr
Hastelloy N,a solution-strengthened nickel-based superalloy,is one of the key candidate structural materials of the molten salt reactor(MSR)due to its good elevated temperature mechanical properties,c
Pure tungsten shows the higher promise as plasma-facing material because of its low sputtering yield,high melting point and high thermal conductivity.The recrystallization behavior of a highly-deforme
Austenitic stainless steels are important structural materials in both fusion and fission reactors.Alumina-forming austenitic(AFA)steel is a new type austenitic steel which shows higher strength and b
In comparison with solid breeder blanket,the liquid lithium breeder blanket has following inherent advantages:(1)high tritium breeding ratio,(2)high thermal conductivity,(3)simplicities of blanket sel
The flux-cored wires were prepared by changing the contents of RE elements from 0 to 1%in the cored components,respectively,which were designed for the gas-shielded welding of 10CrNi3MoV high strength
A plasma generator based on hollow cathode discharge(HCD)has been designed and installed on the linear magnetic device,for the researches on helium and hydrogen plasma interaction with plasma facing c