C5101錫青銅上(shang)其(qi)Ms點(dian)不(bu)高(gao)，在發生馬氏(shi)體組織轉變(bian)(bian)時(shi)，鋼(gang)(gang)(gang)(gang)(gang)的塑(su)性已經很差，不(bu)易發生塑(su)性變(bian)(bian)形，因(yin)此，就保(bao)留了(le)熱應力作(zuo)用所造成的變(bian)(bian)形征，模(mo)具(ju)(ju)型(xing)腔趨(qu)向收縮(suo)。但(dan)若淬火(huo)溫(wen)度(du)(>850℃)，也可(ke)能(neng)因(yin)組織應力起主(zhu)導作(zuo)用，而(er)(er)使型(xing)腔趨(qu)向于。在用9Mn2V，9SiCr，CrWMn，GCr15鋼(gang)(gang)(gang)(gang)(gang)等低合金具(ju)(ju)鋼(gang)(gang)(gang)(gang)(gang)制作(zuo)模(mo)具(ju)(ju)時(shi)，其(qi)淬火(huo)變(bian)(bian)形規律與(yu)碳(tan)素具(ju)(ju)鋼(gang)(gang)(gang)(gang)(gang)相似，但(dan)變(bian)(bian)形量(liang)要碳(tan)素具(ju)(ju)鋼(gang)(gang)(gang)(gang)(gang)要小(xiao)(xiao)。對于一些(xie)高(gao)合金鋼(gang)(gang)(gang)(gang)(gang)，如Cr12MoV鋼(gang)(gang)(gang)(gang)(gang)等，由于其(qi)碳(tan)及合金元素含量(liang)較(jiao)高(gao)，Ms點(dian)較(jiao)低，因(yin)而(er)(er)淬火(huo)后有較(jiao)多的殘余奧(ao)氏(shi)體，它對由于馬氏(shi)體而(er)(er)致(zhi)的體積(ji)有抵消作(zuo)用，因(yin)此，淬火(huo)后的變(bian)(bian)形就相當小(xiao)(xiao)，一般用空冷、風冷、硝(xiao)鹽(yan)浴淬火(huo)時(shi)，模(mo)具(ju)(ju)型(xing)腔趨(qu)于微量(liang);若淬火(huo)溫(wen)度(du)過高(gao)，則(ze)殘余奧(ao)氏(shi)體量(liang)，型(xing)腔也可(ke)能(neng)縮(suo)小(xiao)(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)熱(re)處理(li)1、青(qing)(qing)(qing)銅(tong)(tong)退(tui)(tui)火(huo)(huo)(huo)(huo)其目的(de)是(shi)消(xiao)除青(qing)(qing)(qing)銅(tong)(tong)在(zai)冷(leng)(leng)(leng)、熱(re)變形過(guo)(guo)程中(zhong)(zhong)的(de)應(ying)力，恢復塑(su)性(xing)，對(dui)于鑄(zhu)造(zao)青(qing)(qing)(qing)銅(tong)(tong)，為(wei)了消(xiao)除鑄(zhu)造(zao)應(ying)力，減(jian)輕偏析、改(gai)善組織及(ji)提高鑄(zhu)件的(de)機械(xie)性(xing)能(neng)(neng)，有時(shi)(shi)(shi)(shi)需進行擴(kuo)散退(tui)(tui)火(huo)(huo)(huo)(huo)。其工藝為(wei)600~700℃加(jia)熱(re)，保(bao)溫4~5h后，隨爐(lu)冷(leng)(leng)(leng)卻。鑄(zhu)造(zao)錫(xi)青(qing)(qing)(qing)銅(tong)(tong)擴(kuo)散退(tui)(tui)火(huo)(huo)(huo)(huo)后應(ying)該水冷(leng)(leng)(leng)，以防止(zhi)脆性(xing)相(xiang)析出。 2、青(qing)(qing)(qing)銅(tong)(tong)淬(cui)火(huo)(huo)(huo)(huo)及(ji)時(shi)(shi)(shi)(shi)效適宜(yi)淬(cui)火(huo)(huo)(huo)(huo)及(ji)時(shi)(shi)(shi)(shi)效強化(hua)的(de)常用銅(tong)(tong)合金主要是(shi)彼青(qing)(qing)(qing)銅(tong)(tong)。被青(qing)(qing)(qing)銅(tong)(tong)的(de)淬(cui)火(huo)(huo)(huo)(huo)加(jia)熱(re)溫度(du)一般為(wei)電(dian)阻爐(lu)課程設計780~800，為(wei)防止(zhi)氧化(hua)應(ying)在(zai)氨分解氣(qi)或(huo)氛(fen)氣(qi)中(zhong)(zhong)進行加(jia)熱(re)。保(bao)溫時(shi)(shi)(shi)(shi)間(jian)由零(ling)件厚(hou)度(du)決定。加(jia)熱(re)后迅速淬(cui)入(ru)水中(zhong)(zhong)，在(zai)空氣(qi)中(zhong)(zhong)停(ting)留時(shi)(shi)(shi)(shi)間(jian)不超過(guo)(guo)6s，水溫不能(neng)(neng)高于40℃，且應(ying)保(bao)持清潔，隨后在(zai)310~340℃爐(lu)中(zhong)(zhong)時(shi)(shi)(shi)(shi)效。彈性(xing)零(ling)件的(de)時(shi)(shi)(shi)(shi)效時(shi)(shi)(shi)(shi)間(jian)為(wei)2~3h;要求(qiu)(qiu)耐磨的(de)零(ling)件為(wei)1~2h。3、青(qing)(qing)(qing)銅(tong)(tong)淬(cui)火(huo)(huo)(huo)(huo)及(ji)回火(huo)(huo)(huo)(huo)進行淬(cui)火(huo)(huo)(huo)(huo)、回火(huo)(huo)(huo)(huo)強化(hua)的(de)銅(tong)(tong)合金主要是(shi)含鋁(lv)(lv)(lv)量大于10%的(de)高鋁(lv)(lv)(lv)青(qing)(qing)(qing)銅(tong)(tong)，含有鐵、錳(meng)等元素的(de)復雜鋁(lv)(lv)(lv)青(qing)(qing)(qing)銅(tong)(tong)淬(cui)火(huo)(huo)(huo)(huo)強化(hua)效果尤為(wei)顯著，鋁(lv)(lv)(lv)青(qing)(qing)(qing)銅(tong)(tong)的(de)淬(cui)火(huo)(huo)(huo)(huo)工藝一般為(wei)850~900℃加(jia)熱(re)后水冷(leng)(leng)(leng)。回火(huo)(huo)(huo)(huo)溫度(du)則視性(xing)能(neng)(neng)要求(qiu)(qiu)而定。