| TEM study of the initial oxidation of Ti42Al48Cr8Ag2 | |
| Guo, Changyou; Zhang, Caibei; Lu, Wei; He, Lianlong; Xi, Yanjun; Wang, Fuhui | |
| Corresponding Author | Zhang, Caibei(cbzhang4616@yahoo.com.cn) |
| 2007-08-01 | |
| Source Publication | OXIDATION OF METALS
 |
| ISSN | 0030-770X |
| Volume | 68Issue:1-2Pages:65-76 |
| Abstract | A microstructural investigation of oxide scales was carried out by analytical electron microscope (AEM) after the as-cast Ti42Al48Cr8Ag2 alloy was exposed to air at 1,173 K for 5, 30 and 180 min, respectively. The results indicated that the formation of oxide scale experiences a transformation from ternary-layer system consisting of an outmost rutile (TiO2-rich) layer, mid amorphous alumina and inner nitrides to a double-layer of TiO2 and Al2O3-rich with increasing time from 5 to 30 min. In the subsurface zone, a change was also found a metastable Cr-rich new phase with bcc structure of a = 1.371 nm formed in addition to the oxidation for X-phase during 30 min. After 180 min, a continuous Laves-phase layer formed instead at the same position. In addition, the process revealed that amorphous alumina changed to a metastable structure before stable alpha-Al2O3 formed. |
| Keyword | Ti42Al48Cr8Ag2 alloy AEM oxidation nitrides new phase |
| DOI | 10.1007/s11085-007-9061-2 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000247931600006 |
| Publisher | SPRINGER/PLENUM PUBLISHERS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/91468 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Caibei |
| Affiliation | 1.Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China 2.Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China 3.Zhongyuan Univ Technol, Zhengzhou 450007, Peoples R China |
| Recommended Citation GB/T 7714 | Guo, Changyou,Zhang, Caibei,Lu, Wei,et al. TEM study of the initial oxidation of Ti42Al48Cr8Ag2[J]. OXIDATION OF METALS,2007,68(1-2):65-76. |
| APA | Guo, Changyou,Zhang, Caibei,Lu, Wei,He, Lianlong,Xi, Yanjun,&Wang, Fuhui.(2007).TEM study of the initial oxidation of Ti42Al48Cr8Ag2.OXIDATION OF METALS,68(1-2),65-76. |
| MLA | Guo, Changyou,et al."TEM study of the initial oxidation of Ti42Al48Cr8Ag2".OXIDATION OF METALS 68.1-2(2007):65-76. |
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