Ultrafine grain structure features in spray-formed AZ31 magnesium alloy |
| |
| Affiliation: | 1. CSIR — Institute of Minerals and Materials Technology (IMMT) Bhubaneswar 751013, India;2. CSIR — National Physical Laboratory (NPL), Dr. K. S. Krishnan Marg, New Delhi 110012, India;1. Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea;2. Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea;3. School of Nano & Materials Science and Engineering, Kyungpook National University, Gyeongsangbuk-do 37224, Republic of Korea;4. Research and Development Division, Hyundai Motor Company, Uiwang 16082, Republic of Korea |
| |
| Abstract: | The ultrafine grain structure was developed in spray-formed AZ31 magnesium alloy by optimizing delivery tube orifice diameter. A significant refinement of grain size ∼1 μm in ultrafine level was achieved by using 2.25 mm delivery tube orifice diameter. The tensile strength value was increased from 145 MPa of as-cast alloy to 250 MPa of spray-formed alloy, registering an enhancement of ∼72%. On the other hand, elongation was increased from 6% to 13% using 2.25 mm orifice, registering more than onefold increase in elongation. Also, hardness enhancement of ∼49% was observed in spray-formed AZ31 alloy compared to as-cast alloy. The fracture surface of spray-formed AZ31 Mg alloy evidences the mixed type of ductile and brittle fracture. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
