TANG Guoyi ZHENG Yangzeng Yanshan University
,
Qinhuangdao
,
ChinaCAI Qigong
,
ZHU Jing Central Iron and Steel Research Institute
,
Ministry of Metallurgical Industry
,
Beijing
,
China TANG Guoyi
,
Dept.of Graduates
,
Central Iron and Steel Research Institute
,
Ministry of Metallurgical Industry
,
Beijing 100081
,
China
金属学报(英文版)
The effects of chemical composition and cooling rate after solidication on the grain coarsening temperature,T_(GC),of the V-Ti-N microalloyed steels have been investigated.It is shown that the T_(GC) may be obviously raised by adding even a little Ti to the base steel so as to pre- cipitate a great ...
关键词:
microalloyed steel
,
null
,
null
Y.F. Gao
,
J.Tan
,
G.D. Liu
,
C.L.Zhang
,
T.Liuand R.Z Ma (Rapidly Quenched Materials Research and Development Centre
,
Central Iron & Steel Research Institute
,
Beijing 100081
,
China)(Metal Physics Department
,
University of Science and Technology Beijing
,
Beijing 100083
,
China)
金属学报(英文版)
A mostly single bcc phase with grain sizes of 15-20 nm was prepared by crystallization of amorphous Fe-P-C-Mo-Cu-Si alloys.The Bs value (H=10000 Oe) reaches 1.595 T for Fe(79.5) P(12)C6Cu(0.5)Mo(0.5)Si(1.5) alloys. The low core loss of 0.14 w/kg at 1.3 T and 50 Hz was confirmed for the bcc Fe(79.5)P...
关键词:
: amorphous alloy
,
null
,
null
CHENG Tianyi Beijing Institute of Technology
,
Beijing
,
ChinaCANTORB University of Oxford
,
UKMcLEANM FLOWERHM Imperial College
,
UK CHENG Tianyi
,
associate professor
,
Faculty of Metallography
,
Beijing Institute of Technology
,
Beijing 100081
,
China
金属学报(英文版)
In rapidly solidified Ni-34.6 at-% Al alloy,when the cooling the rate during solidification reached the order of 10~6 K/s,the size of the microstructures,such as the grains and substructure of the martensite,decreased dramatically.The various kinds of interfaces with high density and homogeneous dis...
关键词:
NiAl
,
null
,
null
,
null
ZHAO Yu HE Zhongzhi WENG Yuqing WU Baorong Central Iron and Steel Research Institute
,
Ministry of Metallurgical Industry
,
Beijing
,
China Doctorate Student
,
Department No.2
,
Central Iron and Steel Research Institute
,
Ministry of Metallurgical Industry
,
Beijing 100081
,
China
金属学报(英文版)
When Sn segregated at grain boundaries of high induction oriented silicon steel,no remarka- ble interaction between Sn and other elements was observed.At the starting temperature of secondary recrystallization,950℃,a certain Sn still segregates at grain boundaries.Sn seems to act as a supplemental i...
关键词:
silicon steel
,
null
,
null
,
null
,
null
ZHONG Jiaxiang QI Yan Beijing Institute of Technology
,
Beijing
,
ChinaZHANG Xiumu GUO Yunyi Institute of Metal Research
,
Academia Sinica
,
Shenyang
,
China Beijing Institute of Technology
,
Beijing 100081
,
China
金属学报(英文版)
A new “mid-relief” plate martensite was observed together with lenticular plate and thin plate martensites in Fe-29.37Ni-0.34C alloy after twice stepped cooling:-100/-120℃, -120/-140℃,-155/-165℃ and -165/-196℃,by means of colour metallography and TEM.The morphology of martensites changes with decrea...
关键词:
martensite
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null
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null
MA Peili YUAN Ying ZHONG Zengyong Central Iron and Steel Research Institute
,
Ministry of Metallurgical Industry
,
Beijing
,
China MA Peili Senior Engineer
,
Lab.of Superalloy
,
Central Iron and Steel Research Institute
,
Ministry of Metallurgical Industry
,
Beijing 100081
,
China
金属学报(英文版)
By adding small amount of Mg to the wrought superalloys,the steady stage of creep,and es- pecially the tertiary stage of creep are prolonged.Also,the steady creep rate is decreased within the range of low strain rates.At higher strain rates,however,the effect of Mg on creep rate vanishes.This may be...
关键词:
Mg microalloying
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null
,
null
,
null
XU Wenchong SUN Fuyu Central Iron and Steel Research Institute
,
Ministry of Metallurgical Industry
,
Beijing
,
China XU Wenchong Senior Engineer
,
Dept.No.13
,
Central Iron and Steel Research Institute
,
Ministry of Metallurgical Industry
,
Beijing 100081
,
China
金属学报(英文版)
The lattice constants and chemical composition of Ti,Nb and V precipitates with different particle sizes have been measured hy means of CBED and EDAX.It was obtained that the concentration ratio Of Nb and V,C_(Nb)/C_V,and the lattice constants in the Nb-V steel de- crease with the decrease of the pa...
关键词:
microalloyed steel
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null
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null
