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大?。?span class="single-tag-height">713KB
頁數(shù): 5頁
借助于光學(xué)顯微鏡和X射線衍射儀等研究了奧氏體不銹鋼彈簧絲在經(jīng)過97.7%的大變形后抗拉強(qiáng)度高達(dá)1980 MPa的強(qiáng)化現(xiàn)象。結(jié)果表明,鋼絲的硬度和抗拉強(qiáng)度隨著變形量的增加而升高。在大變形量時(shí),沿拉拔方向的組織趨向纖維化,變形馬氏體的體積分?jǐn)?shù)在增加,拉拔鋼絲的抗拉強(qiáng)度值升高的幅度增加。分析認(rèn)為變形強(qiáng)化,纖維組織強(qiáng)化和馬氏體相變強(qiáng)化是大變形強(qiáng)化的主要原因。
格式:pdf
大?。?span class="single-tag-height">122KB
頁數(shù): 7頁
Designation: A 313/A 313M –03 Standard Speci?cation for Stainless Steel Spring Wire 1 This standard is issuedunder the ?xed designation A 313/A 313M; the number immediately following the designation indicates the year of original adoption or, in the caseof revision, the year of last revision. A number in parenthesesindicates the year of last reapproval. A superscript epsilon (e) indicates an edito