Microstructure and mechanical properties of spray formed AZ31 magnesium alloy
-
摘要: 采用噴射沉積方法制備了AZ31鎂合金沉積柱坯,利用熱軋作為后續加工,研究了鎂合金的組織變化及材料的性能.實驗結果表明:沉積態合金組織均勻,晶粒細小(平均晶粒尺寸約為20μm);熱軋變形的致密化過程、動態再結晶以及退火再結晶使合金具有良好的組織結構和力學性能;軋制態試樣斷口呈現為脆性解理斷裂方式,退火態試樣斷口則表現為脆性和韌性斷裂混合機制.Abstract: AZ31 magnesium alloy billets were prepared by spray forming technique, then the alloy billets were hot rolled into compact plates. The microstructure and mechanical properties of the alloy were investigated. The result indicates that the spray formed alloy has a fine microstructure with an average grain size of 20 μm. The finer and mechanical properties were gained by the compacted processing, dynamic recrystallization and annealed static recrystallization. The fracture surfaces of the as-hot rolled sample show a typical brittle fracture character while the as-annealed sample displays a mixed mode of brittle fracture and tough-hess fracture.
-
Key words:
- magnesium alloys /
- spray forming /
- hot rolling /
- recrystallization
-
點擊查看大圖
計量
- 文章訪問數: 166
- HTML全文瀏覽量: 23
- PDF下載量: 3
- 被引次數: 0
下載:
