MULTIDIRECTIONAL FORGING OF Mg-Zn-Ca BIODEGRADABLE ALLOYS; INVESTIGATING MICROSTRUCTURE, MECHANICAL, AND CORROSION BEHAVIORS

被引：0
作者：
Kudva, S. aditya [1 ]
Anne, Gajanan [2 ]
Ramesh, S. [3 ]
Kumar, Prakash [4 ]
Prashanth, B. h. maruthi [5 ,6 ]
Patil, Narahari s. [2 ]
Singh, Yashvardhan [2 ]
Yadav, Chandra bhushan kumar [7 ]
机构：
[1] Shri Madhwa Vadiraja Inst Technol & Management, Dept Mech Engn, Udupi 574115, India
[2] Manipal Acad Higher Educ MAHE, Manipal Inst Technol, Dept Mech & Ind Engn, Manipal 576104, Karnataka, India
[3] RV Univ, Sch Comp Sci & Engn, Bangaluru 560059, India
[4] Univ Labs Technol Pvt Ltd, Gurugram 122003, Haryana, India
[5] AGM Rural Coll Engn & Technol, Dept Mech Engn, Hubballi 581207, Karnataka, India
[6] Affliated Visvesvaraya Technol Univ, Belagavi, India
[7] Sitamarthi Inst Technol, Dept Civil Engn, Sitamarhi, Bihar, India
来源：
SURFACE REVIEW AND LETTERS | 2024年
关键词：
Mg-Zn-Ca alloy; multidirectional forging; microhardness; corrosion behavior; IN-VITRO;
D O I：
10.1142/S0218625X25500738
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This study examined the microstructural, mechanical, and corrosion behaviors of a multidirectional-forged (MDF) Mg-Zn-Ca alloy. The results showed significant grain refinement of the alloy after 5 passes of the MDF process from 378 mu m to 23 mu m. X-ray diffraction analysis (XRD) revealed the presence of finer Mg7Zn3 phases and alpha-Mg and Ca5Zn3 phases after the MDF process and peak shift and broadening. Higher hardness (76.46 +/- 3) was noticed in the MDF 3 pass sample due to grain refinement; further hardness slightly decreased due to texture softening. Moreover, the results of the in vitro corrosion experiments conducted in SBF solution showed that the corrosion current densities of the alloys move in a noble direction as the number of MDF passes increases. MDF 3 pass sample (0.00523mm/y) showed the lowest degradation rates compared to the as-cast sample (0.01154mm/y), attributed to refining and redistributing the second phases.
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页数：7
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