高校问答佛教横三世佛:300分工科材料类英文论文求好翻译.3
来源：百度文库 编辑：高校问答 时间：2024/04/29 16:32:50
When the AI-Zn-(Cu) alloy was aged at 150℃
after solution treatment, spinodal decomposition
occurred firstly, and then cellular dual phase nucro-
structure formed by DP Due to the low temperature,
the size of DP cells was small, and the lamellae were
fine; at the same time, the density of supersaturated
vacancies was high, and the quenched stress was
also intensive in the alloy, which led to many defects
in the DP nucrostructure. Thereby, with the increase
of aging time, the fine lamellar microstructure of DP
was easily dissolved in some places with defects and
changed into the rod-shaped one. The rod-shaped
microstructure at the primitive boundaries and DP
cellular boundaries became bigger and was spher-
oidized through the rapid diffusion of atoms in the
high angle boundaries in order to decrease the
boundary energy. With the further extension of aging
time, the rod-shaped microstructure inside the DP
cells was gradually spheroidized by the volume dif-
fusion in order to decrease the boundary energy.
When the A1-Zn-(Cu) alloy was aged at above
200℃ after solution treatment, the size of DP cells
was large, the lamellae were coarse, and only a few
defects existed. Therefore,the lamellar microstruc-
ture inside the DP cells was not easily dissolved dur-
ing the isothermal treatment. Due to the diffusion of
atoms along the boundaries of the fine lamellar
microstructure, however, the coarser lamellar micro-
structure formed there and then transformed into the
nucleus of discontinuous coarsening. The discon-
sinuous coarsening nucleus swallowed up the fine
lamellar of DP cells by the migration of the high an-
gle cellular boundaries and developed into the
coarsening lamellar morphology to decrease the
boundary energy.
The diffusion rate of Zn atoms in Al matrix was
reduced due to the addition of Cu atoms, so the
transformation velocity of spheroidization and dis-
continuous coarsening of DP microstructure was de-
creased.
after solution treatment, spinodal decomposition
occurred firstly, and then cellular dual phase nucro-
structure formed by DP Due to the low temperature,
the size of DP cells was small, and the lamellae were
fine; at the same time, the density of supersaturated
vacancies was high, and the quenched stress was
also intensive in the alloy, which led to many defects
in the DP nucrostructure. Thereby, with the increase
of aging time, the fine lamellar microstructure of DP
was easily dissolved in some places with defects and
changed into the rod-shaped one. The rod-shaped
microstructure at the primitive boundaries and DP
cellular boundaries became bigger and was spher-
oidized through the rapid diffusion of atoms in the
high angle boundaries in order to decrease the
boundary energy. With the further extension of aging
time, the rod-shaped microstructure inside the DP
cells was gradually spheroidized by the volume dif-
fusion in order to decrease the boundary energy.
When the A1-Zn-(Cu) alloy was aged at above
200℃ after solution treatment, the size of DP cells
was large, the lamellae were coarse, and only a few
defects existed. Therefore,the lamellar microstruc-
ture inside the DP cells was not easily dissolved dur-
ing the isothermal treatment. Due to the diffusion of
atoms along the boundaries of the fine lamellar
microstructure, however, the coarser lamellar micro-
structure formed there and then transformed into the
nucleus of discontinuous coarsening. The discon-
sinuous coarsening nucleus swallowed up the fine
lamellar of DP cells by the migration of the high an-
gle cellular boundaries and developed into the
coarsening lamellar morphology to decrease the
boundary energy.
The diffusion rate of Zn atoms in Al matrix was
reduced due to the addition of Cu atoms, so the
transformation velocity of spheroidization and dis-
continuous coarsening of DP microstructure was de-
creased.
何时AI Zn (Cu) 合金变老了在150? 在解答治疗以后, spinodal 分解首先发生了, 和然后多孔的双重阶段nucro- 结构由DP 形成由于低温, DP 细胞的大小小, 并且鳞片优良是; 同时, 密度过饱和的空位是高的, 并且熄灭的重音是还密集在合金, 导致许多瑕疵在DP nucrostructure 。从而, 以老化时间增量, DP 美好的薄片状微结构容易地被溶化了在一些地方以瑕疵和被改变了到rod-shaped 一个。rod-shaped 微结构在原始界限和DP 多孔的界限变得更大和是spher- oidized 通过原子迅速扩散在高角度界限为了减少界限能量。以老化时间进一步引伸, rod-shaped 微结构在DP 细胞里面是逐渐spheroidized 由容量dif- 融合为了减少界限能量。何时A1 Zn (Cu) 合金变老了在上述200? 在解答治疗以后, DP 细胞的大小是大的, 鳞片是粗糙的, 并且唯一几个瑕疵存在了。所以, 薄片状microstruc- ture 在DP 细胞里面不是容易地被溶化的dur- ing 等温治疗。由于原子扩散沿美好的薄片状微结构的界限, 然而, 更加粗糙的薄片状微结构那里形成了和然后变换成中坚力量不连续coarsening 。discon- sinuous coarsening 中坚力量吞下罚款薄片状DP 细胞由上流的迁移gle 多孔的界限和显现出成coarsening 薄片状形态学减少界限能量。Zn 原子的扩散率在Al 矩阵被减少的归结于Cu 原子的加法, 因此变革速度spheroidization 和dis- 连续coarsening DP 微结构是de- 被弄皱。