J. Gö
,
ken
金属学报(英文版)
The simultaneous influence of thermal and mechanical treatment was applied to produce a geometrically complex shaft from 51CrV4 steel leading to the formation of microstructures which were significantly different from each other. These microstructural differences were accompanied by a local change of mechanical properties in terms of hardness, electrical resistivity and especially internal friction. The Snoek-K鰏ter peak was recognised and analysed in the structure of this steel.
关键词:
51CrV4 steel
,
steel
,
Functionally
,
Graded
,
Materia
R. González-Martínez
,
J. Gö
,
ken
,
D. Letzig
金属学报(英文版)
The effect of isochronal heat treatments for 1h on variation of damping, hardness and microstructural change of the magnesium wrought alloy AZ61 was investigated. Damping and hardness behaviour could be attributed to the evolution of precipitation process. The influence of precipitation on damping behaviour was explained in the framework of the dislocation string model of Granato and Lücke.
关键词:
magnesium
,
null
,
null
,
null
梁峰
,
王佳
,
曹楚雨
,
林海潮
腐蚀科学与防护技术
结合极化曲线的测量,考察了铁在除氧的不同pH值1N溴化钾溶液中的阳极溶解过程交流阻抗频谱特征,在所考察的pH值范图内,铁阳极溶解过程的塔菲尔斜率约为70mV/dec.。在较低极化电位下,pH值为4.0,2.0,1.3,0.6时,阻抗谱由一个低频感抗弧及一高频容抗弧组成;在较高极化电位下,且pH值为1.3,0.6时,阻抗谱仍为一个低频感抗弧及一高频容抗弧,pH值为2.0,4.0时,随极化电位升高,此时阻抗谱是由一个高频容抗及一低频容抗弧组成。分析了形成各种阻抗谱的原因。实验结果支持了Ken Nobe所提出的
关键词:
