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Throughout the total fatigue life the cracks are considered to be formed mostly from the persistent slip bands.  2\uff09At the failure cycle the length of the slip bands was shorter and that of the cracks\u3000longer\u3000for\u3000the\u3000larger\u3000stress\u3000amplitude\u3000than\u3000for\u3000the\u3000smaller. As\u3000the\u3000cycle proceeds the cracks seem rather to start from the existent stress concentration sources than to trouble to develop slip lines or bands. \u30003\uff09For each over-stress amplitude\uff0c smaller than the yielding point\uff0c the slip bands became visible at the cycle of about 1\uff05 of the failure cycle. \u3000\u30004\uff09For the specimen anisotropic with the axially banded structure as the roII-effect\uff0c axial slip bands and cracks as well were\u3000predominant and for one which was made isotropic by the high temperature annealing\uff0c such predominance almost vanished. \u3000\u30005\uff09The\u3000surface\u3000hardness\u3000of pearlite\u3000of the\u3000fatigued specimen was 0.97 to 1.12 times the hardness of the virgin specimen\uff0cthe number being larger for the larger stress amplitude\uff0cwhile that of ferrite was just 0.90 to 0.98 times\uff0cwithout such relation with the amplitude.", "subitem_description_type": "Abstract"}]}, "item_2_full_name_3": {"attribute_name": "\u8457\u8005\u5225\u540d", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "32011", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Shigeyoshi, OIWAKE"}]}, {"nameIdentifiers": [{"nameIdentifier": "32012", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "\uff2b\uff41\uff5a\uff55\uff4f, \uff35\uff2e\uff2f"}]}]}, "item_2_publisher_32": {"attribute_name": "\u51fa\u7248\u8005", "attribute_value_mlt": [{"subitem_publisher": "\u5317\u898b\u5de5\u696d\u5927\u5b66"}]}, "item_2_select_15": {"attribute_name": "\u8457\u8005\u7248\u30d5\u30e9\u30b0", "attribute_value_mlt": [{"subitem_select_item": "publisher"}]}, "item_creator": {"attribute_name": "\u8457\u8005", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "\u8ffd\u5206, \u91cd\u7fa9"}], "nameIdentifiers": [{"nameIdentifier": "32009", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "\u5b87\u91ce, \u548c\u96c4"}], "nameIdentifiers": [{"nameIdentifier": "32010", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "\u30d5\u30a1\u30a4\u30eb\u60c5\u5831", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2016-11-22"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "3-2-3.pdf", "filesize": [{"value": "4.4 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 4400000.0, "url": {"label": "3-2-3.pdf", "url": "https://kitami-it.repo.nii.ac.jp/record/6282/files/3-2-3.pdf"}, "version_id": "86161bcd-4d56-47dc-b016-dfe6fe70445a"}]}, "item_language": {"attribute_name": "\u8a00\u8a9e", "attribute_value_mlt": [{"subitem_language": "jpn"}]}, "item_resource_type": {"attribute_name": "\u8cc7\u6e90\u30bf\u30a4\u30d7", "attribute_value_mlt": [{"resourcetype": "departmental bulletin paper", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "\u70ad\u7d20\u92fc\u306e\u306d\u3058\u308a\u75b2\u308c\u306b\u304a\u3051\u308b\u3059\u3079\u308a\u5e2f\u306e\u5909\u5316\u3068\u304d\u88c2\u306e\u9032\u5c55\u3068\u306e\u95a2\u4fc2", "item_titles": {"attribute_name": "\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_title": "\u70ad\u7d20\u92fc\u306e\u306d\u3058\u308a\u75b2\u308c\u306b\u304a\u3051\u308b\u3059\u3079\u308a\u5e2f\u306e\u5909\u5316\u3068\u304d\u88c2\u306e\u9032\u5c55\u3068\u306e\u95a2\u4fc2"}]}, "item_type_id": "2", "owner": "1", "path": ["7/15/26"], "permalink_uri": "https://kitami-it.repo.nii.ac.jp/records/6282", "pubdate": {"attribute_name": "\u516c\u958b\u65e5", "attribute_value": "2007-04-09"}, "publish_date": "2007-04-09", "publish_status": "0", "recid": "6282", "relation": {}, "relation_version_is_last": true, "title": ["\u70ad\u7d20\u92fc\u306e\u306d\u3058\u308a\u75b2\u308c\u306b\u304a\u3051\u308b\u3059\u3079\u308a\u5e2f\u306e\u5909\u5316\u3068\u304d\u88c2\u306e\u9032\u5c55\u3068\u306e\u95a2\u4fc2"], "weko_shared_id": 3}