Establishment of multi-scale structural controlling process technology aiming to high performance common magnesium alloys

高性能普通镁合金多尺度组织控制工艺技术的建立

• 批准号: 22246094
• 负责人: KAMADO Shigeharu
• 金额: $ 31.87万
• 依托单位: Nagaoka University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22246094/
• 关键词: 汎用型マグネシウム合金; 塑性加工; 熱処理; ミクロ組織; ナノ析出物; 動的再結晶; 機械的性質; 集合組織

We aim to improve the mechanical properties by an application of multi-scale microstructural control to mainly heat treatable common Mg-Al-Ca-Mn alloys. Extraordinary high-strength common Mg alloy is obtained only by hot extrusion using a DC cast sample of the Mg-Al-Ca-Mn alloy with a large amount of alloying elements at low temperature under a low ram speed of 0.1 mm s-1. Namely, the extruded sample exhibits high tensile proof stresses more than 400MPa and rotational bending fatigue strength of240MPa whose values are superior to that of extra-super-duralmin. The high strengths are attributed to the combined results of fine DRXed grains pinned by finely fragmented Al-Ca compounds, nano-scale plate-like Al-Ca and spherical Al-Mn-Ca precipitates, and a strong basal texture at the unrecrystallized regions.Furthermore, we could carry out high speed extrusion of 60 m/min by using the dilute Mg-Al-Ca-Mn with no crystallized compounds at grain boundaries. The extrusion speed is comparable to that for 6063 Al window sash. In matrix of the extruded sample ordered GP zones also precipitate by T5 treatment after the extrusion, resulting in tensile properties being almost equal to T5-treated 6N01Al alloys, which are practically applied to a double skin outer panel of Shinkansen.

我们旨在通过将多尺度的微结构控制应用于主要可加热的普通MG-AL-CA-MN合金来改善机械性能。非凡的高强度公共MG合金仅通过使用MG-AL-CA-MN合金的直流挤出样品来获得，在低温速度下，在低温速度为0.1 mm S-1的情况下，在低温下具有大量合金元件。也就是说，挤出的样品表现出高抗拉力的应力超过400MPa，旋转弯曲强度为240MPa，其值优于超舒张半半分。高强度归因于精细的Drxed晶粒的综合结果，这些晶粒被细化的Al-Ca化合物，纳米尺度板板状的Al-Ca和球形Al-Mn-CA固定，并在未晶体的区域内降水质量很强，并且可以通过60 m/min的限制组合进行高速挤出。在晶界。挤压速度与6063 Al窗框相当。在挤出样品的挤压样品中，GP区域也通过T5处理在挤出后沉淀，导致拉伸性能几乎等于T5处理的6N01AL合金，实际上将其应用于Shinkansen的双皮肤外面板。

项目成果

Mg-Al-Ca-Mn均質化処理材の高温押出し

Mg-Al-Ca-Mn均质材料的高温挤压

• 发表时间: 2012
• 作者: 徐世偉、高橋広樹、大石敬一郎、鎌土重晴、平渡末二、清水和紀;花木悟
• 通讯作者: 花木悟

Mg-Al-Ca-Mn系希薄合金高速押出し材のミクロ組織と機械的性質

Mg-Al-Ca-Mn稀合金高速挤压材料的显微组织与力学性能

• 发表时间: 2011
• 作者: 目崎達也;徐世偉;本間智之;鎌土重晴;高橋泰;花木悟
• 通讯作者: 花木悟

マグネシウム合金材料、エアコン用圧縮機及びマグネシウム合金部材の製造方法

镁合金材料、空调压缩机及镁合金零件的制造方法

• 发表时间: 2010

Microstructure evolution of as-cast Mg-Al-Ca-Mn alloy by hot extrusion

热挤压铸态 Mg-Al-Ca-Mn 合金显微组织演变

• 发表时间: 2012
• 期刊: Proc. 9th International Conference on Magnesium Alloys and their Applications
• 作者: Tomohiro Sasaki;Yusuke Hosokawa;K. Oh-ishi
• 通讯作者: K. Oh-ishi

Development of New Wrought Magnesium Alloy with Ordered GP Zone (Invited lecture)

有序GP区新型变形镁合金的开发（特邀报告）

• 发表时间: 2010
• 作者: S.Kamado;S.W.Xu;T.Honma
• 通讯作者: T.Honma