1.不(bu)(bu)(bu)銹鋼(gang)管的(de)(de)低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)脆(cui)(cui)化---在低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)環境(jing)下(xia)(xia)(xia)，變形(xing)能(neng)量(liang)小(xiao)。 在低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)環境(jing)下(xia)(xia)(xia)，伸(shen)長(chang)率(lv)(lv)和截面縮短率(lv)(lv)降(jiang)低(di)(di)(di)的(de)(de)現象稱為(wei)低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)脆(cui)(cui)化。 更(geng)多關于鐵氧體系(xi)(xi)列的(de)(de)體心立方結構。 2。不(bu)(bu)(bu)銹鋼(gang)管的(de)(de)低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)加工---馬(ma)(ma)氏(shi)(shi)(shi)體系(xi)(xi)不(bu)(bu)(bu)銹鋼(gang)在奧(ao)(ao)氏(shi)(shi)(shi)體化溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)度下(xia)(xia)(xia)淬火后冷(leng)卻至極低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)度，促進(jin)馬(ma)(ma)氏(shi)(shi)(shi)體淬火。 適用于僅產(chan)生殘余奧(ao)(ao)氏(shi)(shi)(shi)體的(de)(de)不(bu)(bu)(bu)銹鋼(gang)。 \\ n 低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)，電(dian)阻，線(xian)性(xing)膨脹(zhang)系(xi)(xi)數，導熱(re)(re)系(xi)(xi)數，質(zhi)量(liang)熱(re)(re)熔，磁性(xing)能(neng)都發生了巨大變化。 電(dian)阻，線(xian)性(xing)膨脹(zhang)系(xi)(xi)數在低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)下(xia)(xia)(xia)變小(xiao);導熱(re)(re)系(xi)(xi)數和質(zhi)量(liang)熱(re)(re)容在低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)下(xia)(xia)(xia)急(ji)劇下(xia)(xia)(xia)降(jiang);當(dang)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)度下(xia)(xia)(xia)降(jiang)時(shi)，楊氏(shi)(shi)(shi)模量(liang)縱向彈(dan)性(xing)模量(liang)同(tong)時(shi)增加。 ＃奧(ao)(ao)茲奧(ao)(ao)氏(shi)(shi)(shi)體不(bu)(bu)(bu)銹鋼(gang)管具(ju)有(you)(you)Ms點馬(ma)(ma)氏(shi)(shi)(shi)體異常起(qi)始溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)度或低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)Subzreo溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)度下(xia)(xia)(xia)的(de)(de)馬(ma)(ma)氏(shi)(shi)(shi)體形(xing)成(cheng)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)度，因(yin)此可以在保持低(di)(di)(di)于Ms點的(de)(de)同(tong)時(shi)形(xing)成(cheng)馬(ma)(ma)氏(shi)(shi)(shi)體。 當(dang)馬(ma)(ma)氏(shi)(shi)(shi)體在低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)下(xia)(xia)(xia)形(xing)成(cheng)時(shi)，奧(ao)(ao)氏(shi)(shi)(shi)體不(bu)(bu)(bu)銹鋼(gang)SUS30418Cr-8Ni的(de)(de)代表性(xing)鋼(gang)在室溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)下(xia)(xia)(xia)未對準，在低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)環境(jing)下(xia)(xia)(xia)變為(wei)磁性(xing)。 \\ n 關于低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)狀(zhuang)態，鐵素(su)體不(bu)(bu)(bu)銹鋼(gang)管具(ju)有(you)(you)像碳鋼(gang)一樣的(de)(de)低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)脆(cui)(cui)性(xing)，而奧(ao)(ao)氏(shi)(shi)(shi)體鋼(gang)不(bu)(bu)(bu)具(ju)有(you)(you)低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)脆(cui)(cui)性(xing)。因(yin)此，鐵素(su)體或馬(ma)(ma)氏(shi)(shi)(shi)體不(bu)(bu)(bu)銹鋼(gang)經受低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)脆(cui)(cui)化，奧(ao)(ao)氏(shi)(shi)(shi)體不(bu)(bu)(bu)銹鋼(gang)或鎳基合金(jin)不(bu)(bu)(bu)具(ju)有(you)(you)低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)脆(cui)(cui)性(xing)。 鐵素(su)體不(bu)(bu)(bu)銹鋼(gang)管的(de)(de)SUS41013Cr，SUS43018Cr等在低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)下(xia)(xia)(xia)的(de)(de)沖擊值急(ji)劇下(xia)(xia)(xia)降(jiang)。

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