Amorphization by mechanical alloying in metallic systems with positive Gibbs energy of formation
文献类型：期刊论文
| 作者 | Bai, HY ; Michaelsen, C ; Gente, C ; Bormann, R |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2001 |
| 卷号 | 63期号:6 |
| 关键词 | CU ALLOYS W SYSTEM FE-W TRANSITION PHASES HEATS MO |
| ISSN号 | 0163-1829 |
| 通讯作者 | Bai, HY: GKSS Res Ctr, Inst Mat Res, Max Planck Str, D-21502 Geesthacht, Germany. |
| 中文摘要 | Fe-W has been chosen as a model system to investigate amorphization during mechanical alloying in systems With positive Gibbs energy of formation. Depending on the overall compositions, amorphous phases and supersaturated body-centered-cubic (bcc) Fe-W solid solutions were obtained by mechanical alloying. The thermodynamics of the system was determined by the calculation-of-phase-diagram (CALPHAD) method. The analysis shows that the Fe-W system exhibits a positive heat of mixing in the bcc: solid solution, and a negative heat of mixing in the amorphous phase. As a result, the amorphous phase has a lower (however, still positive) Gibbs energy of formation than the solid solution in the concentration range of 17-42 at. % W, indicating that amorphization in this range is favored, in agreement with the experiments. The mechanism which allows amorphization and formation of solid solutions upon milling to occur in the Fe-W system is discussed. It is proposed that the elastic contribution to the excess enthalpy which originates from coherent interfaces between the elemental components provides a major driving force for alloying in the Fe-W system. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/33589]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Bai, HY,Michaelsen, C,Gente, C,et al. Amorphization by mechanical alloying in metallic systems with positive Gibbs energy of formation[J]. PHYSICAL REVIEW B,2001,63(6). |
| APA | Bai, HY,Michaelsen, C,Gente, C,&Bormann, R.(2001).Amorphization by mechanical alloying in metallic systems with positive Gibbs energy of formation.PHYSICAL REVIEW B,63(6). |
| MLA | Bai, HY,et al."Amorphization by mechanical alloying in metallic systems with positive Gibbs energy of formation".PHYSICAL REVIEW B 63.6(2001). |
入库方式： OAI收割
来源：物理研究所
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