英语翻译studied microstructure,hardness,and thermal fatigue beha

英语翻译
studied microstructure,hardness,and thermal fatigue beha-
vior of H21 steel with several treatment morphologies (strength-
ening spots,stripes and network) processed by laser surface
remelting and reported that amongst all the three laser-treated
morphologies,strengthening network led to the best thermal
fatigue resistance.Another study [17] reported effects of strength-
ening stripes on the surface of the medium carbon steel and
showed that the specimen with 2-mm-spacing striation had the
highest resistance to thermal fatigue of all.Meanwhile,aforemen-
tioned geometric characteristics of units beneath the treated
surface should be considered as a significant factor influencing
the surface property.On the other hand,the cross-sectional
morphology and mechanical properties of units are both depen-
dent on laser processing parameters.Due to it,it is necessary to
investigate the relationship between the characteristics of biomi-
metic units(size,cross-sectional morphology,and mechanical
property) and processing parameters.
Note that in pulsed laser surface remelting(LSR),a series of
overlapping points make up the scanning track [18].Laser pulse
energy,duration,and scanning speed all place important effects.
In addition to the processing parameters such as pulse energy,
pulse width,frequency and scanning speed,overlapping ratio is
another significant factor in pulsed LSR.

研究了具有几种处理形态（增强的斑点、条纹和网络）的H21钢的微观结构、硬度、和热疲劳性状,并报道了,在所有三种激光处理的形态中,增强的网络导致了最佳的耐热疲劳性.另一项研究[17]报导了,在中碳钢表面上的增强条纹的效果,并证明了,具有2mm的间距条纹的样本在所有样本中有最高的耐热疲劳性.同时,在被处理表面之下的单元的前面提到的几何特征应被视为影响表面性质的显著因子.另一方面,单元的横截面形态和机械性质都依赖于激光加工参数.由于这样,所以有必要研究仿生单元的特征（大小,横截面形态,和机械性质）与工艺参数之间的关系.请注意,在脉冲激光表面重熔（LSR）中,一系列重叠的点组成扫描轨迹[18].激光脉冲能量、持续时间和扫描速度都产生重要的影响.除了如脉冲能量、脉冲宽度、频率和扫描速度等加工参数外,重叠率在脉冲LSR中是另一个重要的因子.