本文以 Douglas 数值方法为基础,导出了直角坐标和圆柱坐标包含相变潜热的三维差分方程。采用虚拟节点方法和能量平衡方法处理各种不同类型的边界条件,并编制了计算机应用软件,其计算结果与实测结果基本吻合。通过计算机模拟,本文提出...本文以 Douglas 数值方法为基础,导出了直角坐标和圆柱坐标包含相变潜热的三维差分方程。采用虚拟节点方法和能量平衡方法处理各种不同类型的边界条件,并编制了计算机应用软件,其计算结果与实测结果基本吻合。通过计算机模拟,本文提出了一些改进现行工艺的建议;提出了加热炉最优加热控制方案,对节能和提高热处理件质量具有重要意义。展开更多
The textured shape memory alloys exhibits anisotropic because the property of single crystal is strongly orientation dependent. The effect of texture on phase transformation strain in CuZnAl shape memory sheets was in...The textured shape memory alloys exhibits anisotropic because the property of single crystal is strongly orientation dependent. The effect of texture on phase transformation strain in CuZnAl shape memory sheets was investigated. The texture of parent austenite was measured by X ray goniometer and analyzed by the orientation distribution function. Subsequently, using the texture parameters and single crystal properties, the phase transformation strains at the different directions of rolling plane by the statistically averaging method were calculated. It was showed that the experimental results are agreeable with the calculated ones. It is well explained that this anisotropy of phase transformation strain is mainly caused by the crystallographic texture of the rolled sheets.展开更多
文摘本文以 Douglas 数值方法为基础,导出了直角坐标和圆柱坐标包含相变潜热的三维差分方程。采用虚拟节点方法和能量平衡方法处理各种不同类型的边界条件,并编制了计算机应用软件,其计算结果与实测结果基本吻合。通过计算机模拟,本文提出了一些改进现行工艺的建议;提出了加热炉最优加热控制方案,对节能和提高热处理件质量具有重要意义。
文摘The textured shape memory alloys exhibits anisotropic because the property of single crystal is strongly orientation dependent. The effect of texture on phase transformation strain in CuZnAl shape memory sheets was investigated. The texture of parent austenite was measured by X ray goniometer and analyzed by the orientation distribution function. Subsequently, using the texture parameters and single crystal properties, the phase transformation strains at the different directions of rolling plane by the statistically averaging method were calculated. It was showed that the experimental results are agreeable with the calculated ones. It is well explained that this anisotropy of phase transformation strain is mainly caused by the crystallographic texture of the rolled sheets.
