C5101錫青銅上其Ms點不高(gao)，在發(fa)生馬(ma)氏(shi)體組(zu)(zu)織(zhi)轉(zhuan)變時，鋼(gang)的(de)塑性已經很(hen)差(cha)，不易發(fa)生塑性變形，因(yin)此，就保留(liu)了熱(re)應力作(zuo)用(yong)(yong)所造成(cheng)的(de)變形征，模(mo)具型腔趨(qu)向(xiang)收縮。但若淬火(huo)(huo)溫度(>850℃)，也(ye)可能因(yin)組(zu)(zu)織(zhi)應力起主導(dao)作(zuo)用(yong)(yong)，而使型腔趨(qu)向(xiang)于。在用(yong)(yong)9Mn2V，9SiCr，CrWMn，GCr15鋼(gang)等低合(he)金(jin)具鋼(gang)制作(zuo)模(mo)具時，其淬火(huo)(huo)變形規律(lv)與碳(tan)素具鋼(gang)相似，但變形量要(yao)碳(tan)素具鋼(gang)要(yao)小(xiao)。對(dui)于一(yi)些高(gao)合(he)金(jin)鋼(gang)，如Cr12MoV鋼(gang)等，由(you)于其碳(tan)及合(he)金(jin)元素含量較(jiao)高(gao)，Ms點較(jiao)低，因(yin)而淬火(huo)(huo)后有較(jiao)多的(de)殘(can)余(yu)奧氏(shi)體，它(ta)對(dui)由(you)于馬(ma)氏(shi)體而致的(de)體積有抵消作(zuo)用(yong)(yong)，因(yin)此，淬火(huo)(huo)后的(de)變形就相當小(xiao)，一(yi)般用(yong)(yong)空冷、風冷、硝(xiao)鹽浴淬火(huo)(huo)時，模(mo)具型腔趨(qu)于微量;若淬火(huo)(huo)溫度過高(gao)，則殘(can)余(yu)奧氏(shi)體量，型腔也(ye)可能縮小(xiao)

C5101錫青銅

化學成份：
銅Cu：余量
錫Sn：3.5～4.5
鉛Pb：≤0.02
磷P：0.20～0.40
鋁Al：≤0.002
鐵Fe：≤0.02
硅Si：≤0.002
銻Sb：≤0.002
鉍Bi：≤0.002
注：≤0.1(雜質)
標準：JIS
特性及適用范圍：
C5101錫青銅有高的力學性能、耐腐蝕性和高彈性,能很好地在冷態下承受壓力加工,也可在熱態下進行壓力加工。QSn4-0.3多用制作各種壓力計用管材料
力學性能：抗拉強度σb (MPa)：≥410
伸長率δ10 (％)：≥8
伸長率δ5 (％)：≥10
注：棒材的縱向室溫拉伸力學性能
試樣尺寸：直徑或對邊距離5～12
熱處理規范：
熱加(jia)工(gong)溫度(du)750～780℃;退火溫度(du)600～650℃。

C5101錫青銅青(qing)(qing)(qing)銅(tong)(tong)(tong)(tong)熱(re)(re)處理1、青(qing)(qing)(qing)銅(tong)(tong)(tong)(tong)退(tui)(tui)火(huo)(huo)(huo)(huo)其目的(de)(de)是消除青(qing)(qing)(qing)銅(tong)(tong)(tong)(tong)在(zai)冷(leng)、熱(re)(re)變形過程中(zhong)的(de)(de)應(ying)力，恢(hui)復塑性(xing)(xing)，對(dui)于鑄(zhu)造(zao)青(qing)(qing)(qing)銅(tong)(tong)(tong)(tong)，為(wei)(wei)了(le)消除鑄(zhu)造(zao)應(ying)力，減(jian)輕偏析(xi)、改善組織及提高(gao)(gao)鑄(zhu)件的(de)(de)機械(xie)性(xing)(xing)能，有時(shi)需進行擴(kuo)(kuo)散退(tui)(tui)火(huo)(huo)(huo)(huo)。其工(gong)藝為(wei)(wei)600~700℃加(jia)(jia)熱(re)(re)，保(bao)溫(wen)(wen)4~5h后，隨爐冷(leng)卻。鑄(zhu)造(zao)錫青(qing)(qing)(qing)銅(tong)(tong)(tong)(tong)擴(kuo)(kuo)散退(tui)(tui)火(huo)(huo)(huo)(huo)后應(ying)該(gai)水(shui)冷(leng)，以防(fang)止脆性(xing)(xing)相析(xi)出。 2、青(qing)(qing)(qing)銅(tong)(tong)(tong)(tong)淬(cui)(cui)火(huo)(huo)(huo)(huo)及時(shi)效適宜淬(cui)(cui)火(huo)(huo)(huo)(huo)及時(shi)效強(qiang)(qiang)化(hua)的(de)(de)常用(yong)銅(tong)(tong)(tong)(tong)合(he)金主要(yao)是彼(bi)青(qing)(qing)(qing)銅(tong)(tong)(tong)(tong)。被(bei)青(qing)(qing)(qing)銅(tong)(tong)(tong)(tong)的(de)(de)淬(cui)(cui)火(huo)(huo)(huo)(huo)加(jia)(jia)熱(re)(re)溫(wen)(wen)度(du)(du)一(yi)般(ban)為(wei)(wei)電(dian)阻爐課(ke)程設計780~800，為(wei)(wei)防(fang)止氧化(hua)應(ying)在(zai)氨分(fen)解氣(qi)或氛氣(qi)中(zhong)進行加(jia)(jia)熱(re)(re)。保(bao)溫(wen)(wen)時(shi)間由(you)零件厚(hou)度(du)(du)決定。加(jia)(jia)熱(re)(re)后迅速淬(cui)(cui)入水(shui)中(zhong)，在(zai)空氣(qi)中(zhong)停留時(shi)間不超過6s，水(shui)溫(wen)(wen)不能高(gao)(gao)于40℃，且應(ying)保(bao)持清潔，隨后在(zai)310~340℃爐中(zhong)時(shi)效。彈性(xing)(xing)零件的(de)(de)時(shi)效時(shi)間為(wei)(wei)2~3h;要(yao)求(qiu)耐磨的(de)(de)零件為(wei)(wei)1~2h。3、青(qing)(qing)(qing)銅(tong)(tong)(tong)(tong)淬(cui)(cui)火(huo)(huo)(huo)(huo)及回(hui)(hui)火(huo)(huo)(huo)(huo)進行淬(cui)(cui)火(huo)(huo)(huo)(huo)、回(hui)(hui)火(huo)(huo)(huo)(huo)強(qiang)(qiang)化(hua)的(de)(de)銅(tong)(tong)(tong)(tong)合(he)金主要(yao)是含(han)(han)鋁量大于10%的(de)(de)高(gao)(gao)鋁青(qing)(qing)(qing)銅(tong)(tong)(tong)(tong)，含(han)(han)有鐵、錳(meng)等元素的(de)(de)復雜(za)鋁青(qing)(qing)(qing)銅(tong)(tong)(tong)(tong)淬(cui)(cui)火(huo)(huo)(huo)(huo)強(qiang)(qiang)化(hua)效果尤為(wei)(wei)顯著，鋁青(qing)(qing)(qing)銅(tong)(tong)(tong)(tong)的(de)(de)淬(cui)(cui)火(huo)(huo)(huo)(huo)工(gong)藝一(yi)般(ban)為(wei)(wei)850~900℃加(jia)(jia)熱(re)(re)后水(shui)冷(leng)。回(hui)(hui)火(huo)(huo)(huo)(huo)溫(wen)(wen)度(du)(du)則視性(xing)(xing)能要(yao)求(qiu)而定。