首页   按字顺浏览 期刊浏览 卷期浏览 Microstructure of TiC precipitates in Ti‐implanted &agr;‐Fe
Microstructure of TiC precipitates in Ti‐implanted &agr;‐Fe

 

作者: D. M. Follstaedt,  

 

期刊: Journal of Applied Physics  (AIP Available online 1980)
卷期: Volume 51, issue 2  

页码: 1001-1010

 

ISSN:0021-8979

 

年代: 1980

 

DOI:10.1063/1.327727

 

出版商: AIP

 

数据来源: AIP

 

摘要:

We demonstrate that Ti implanted into &agr;‐Fe (with ∼60 appm C impurity) getters C (along with a lesser amount of N) upon postimplantation annealing and precipitates as TiC. The microstructure of the TiC precipitates is examined with TEM for annealing temperatures up to 860 °C. The precipitate size evolution is discussed in terms of growth, ripening, and dissolution processes. The precipitate size increases with anneal temperature for 1 h anneals. At 700 °C no change in precipitate size is observed for anneal times up to 16 h. At 800 °C, an increase in size is observed for increasing anneal times between 1–64 h, while at 860 °C this increase is thought to occur prior to 1 h and the precipitates are observed to decrease with increasing anneal times between 1 and 4 h. At 800–860 °C, the precipitates have a disk‐like shape, and their orientation in the &agr;‐Fe matrix can be used to identify two types of interfacial area with different degrees of coherency. The implications of the observed microstructure for studies of trapping of embrittling impurities in &agr;‐Fe and for modifying the surface mechanical properties are discussed.

 

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