YANG Ke
,
CAO Mingzhou
,
WAN Xiaojing
,
SHI Changxu Institute of Metal Research
,
Academia Sinica
,
Shenyang
,
110015
,
China.
材料科学技术（英）
The model of hydrogen diffusion formerly de- veloped [1] has been applied successfully to the hydrogen permeation experiment results of three kinds of materials,α—Fe,Fe—Ti alloy and Fe—Ti—C alloy by the mathematical fitting method.From the fitting results it was shown that the model can re- fiect well the diffusion of hydrogen in the materials with trapping.The obtained trapping parameters(α and β)can be used to explain well the diffusion of hydrogen in the samples with trapping.
关键词:
hydrogen diffusion
,
null
,
null
,
null
WANG Anchuan
,
YANG Ke
,
FAN Cungan
,
LI Yiyi(Institute of Metal Research
,
Chinese Academy of Sciences Shenyang 110015
,
China) Manuscript received 4 May 1995
金属学报(英文版)
In this paper,the microstructure and hydrogen embrittlement(HE) susceptibility of an Fe-Ni-Co based superalloy with different contents of trace elements,P and Mn,have been investigated.The results indicated that by lowering the contents of trace elements P and Mn,the size and distribution of γ' become more homogeneous,and the precipitation of stable phase η can be retarded to longer ageing time.As a result,the hydrogen resistant properties of the alloy are obviously improved.
关键词:
:microstructure
,
null
,
null
,
null
,
null
YANG Ke
,
ZHANG Zhi-xi
,
HU Wang-qin
,
BAO Ye-feng
,
JIANG Yong-feng
钢铁研究学报(英文版)
It is expected that the welding hardfacing of continuous casting rolls has better welding performance and higher wear resistance. A new type of submerged-arc hardfacing flux-cored wire has been developed through nitrogen replacing part of carbon and addition of the nitrogen-fixing elements of niobium and titanium. And microstructure, degree of hardness and high-temperature wear resistance of its deposited metal samples were also investigated. It is found that the microstructure is martensite, residual austenite and carbonitride precipitates. As a result, the hardfacing metal with homogeneous distribution of very fine carbonitride particles had high hardness and excellent wear-resisting property during high-temperature wear, which could significantly extend the service life of continuous casting rolls.
关键词:
submerged-arc flux-cored wire
,
hardfacing
,
high-temperature wear resistance
,
continuous casting roll
