Martensitic phase transformations in the nanostructured surface layers induced by mechanical attrition treatment

被引：4
|
作者：
Ni, ZC [1 ]
Wang, XW
Wu, ED
Liu, G
机构：
[1] Chinese Acad Sci, Met Res Inst, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Appl Phys, Lab Nucl Anal Techn, Shanghai 201800, Peoples R China
来源：
JOURNAL OF APPLIED PHYSICS | 2005年 / 98卷 / 11期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2141655
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Conversion electron Mossbauer spectroscopy (CEMS) and x-ray diffraction (XRD) analysis have been used to investigate the relationship between characteristics of phase transformation and the treatment time in surface nanocrystallized 316L stainless steel induced by surface mechanical attrition treatment (SMAT). A similar trend of development of the martensitic phase upon the treatment time has been observed from both CEMS and XRD measurements. However, in the CEMS measurement, two types of martensite phase with different magnetic hyperfine fields are revealed. Based on a random distribution of the non-iron coordinating atoms, a three-element theoretical model is developed to illustrate the difference of two types of martensite phase. The calculated results indicate the segregation of the non-iron atoms associated with SMAT treatment.
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页数：6
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