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doi:10.13228/j.boyuan.issn1001-0777.20140004

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Abstract��When the parts of 17-7PH(0Cr17Ni7Al)precipitation hardening stainless steel was tested by hardness test and fluorescent flaw detection, it was found that the parts was uneven hardness and linear defects inside. The raw material was analyzed by metalloscope, EDS and micro hardness tester. The results show that the main causes to induce the uneven hardness and linear defects is the uneven microscopic structure and ferrite segregation streamers .

Key words�� 17-7PH stainless steel linear defect microstructure segregation microhardness

�ո��: 2014-01-14 ��: 2014-12-12

ͨѶ��: �� E-mail: wumetal@sina.cn

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��׿�ף� �� . 17-7PH��Ӳ�Ȳ��ԭ��[J]. �й��ڿ��, 2014, 32(6): 51-54. GU Zhuo-lun�� TU Zheng�� HUANG Li �� WU Yi-wen. Causes Analysis of Uneven?Hardness of 17-7PH Stainless Steel Part. Chinese Journal of Iron and Steel, 2014, 32(6): 51-54.

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http://gt.chinamet.cn/Jweb_wlcs/CN/10.13228/j.boyuan.issn1001-0777.20140004 �� http://gt.chinamet.cn/Jweb_wlcs/CN/Y2014/V32/I6/51