鍛造加工廠構造改變的通常特性

　　鍛件構造改變的通常特性和次序能夠概括為以下幾點:
　　(1)鍛件在形變的初始期間
，適當於前麵所述的￡=0.07---0.1的(de)那(na)有(you)些(xie)，構(gou)成(cheng)其(qi)有(you)高(gao)密(mi)度(du)位(wei)錯(cuo)的(de)亞(ya)構(gou)造(zao)。這(zhe)些(xie)位(wei)錯(cuo)能(neng)夠(gou)是(shi)均(jun)勻(yun)分(fen)布(bu)或(huo)是(shi)成(cheng)為(wei)脆(cui)狀(zhuang)亞(ya)構(gou)造(zao)的(de)亞(ya)晶(jing)界(jie)。這(zhe)些(xie)亞(ya)構(gou)造(zao)類(lei)型(xing)在(zai)冷(leng)變(bian)形(xing)中(zhong)也(ye)能(neng)夠(gou)觀(guan)察(cha)到(dao)，當(dang)軟(ruan)化(hua)的(de)進(jin)程(cheng)還(hai)不(bu)明(ming)顯(xian)時(shi)
，熱(re)形(xing)變(bian)的(de)這(zhe)個(ge)期(qi)間(jian)能(neng)夠(gou)命(ming)名(ming)為(wei)熱(re)加(jia)工(gong)硬(ying)化(hua)期(qi)間(jian)。與(yu)此(ci)相(xiang)對(dui)應(ying)的(de)亞(ya)構(gou)造(zao)被(bei)稱(cheng)為(wei)“熱加工”亞構造。
　　(2)鍛造加工廠在形變的第二期間中，包含變形曲線的上升有些但:>O.07-0.1。cike，qianghuaxishuxiajiang。yinweiruanhuajinchengdezengqiang
，gouchengleduobianxingyajingjie。yajinglihonggouquyuneiyoushidanggaodezizaiweicuomidu。zaixingbianjinchengzhong，rejiagonggouzaozhububeiduobianxingyagouzaotidai。duobianhuadeyagouzaobenshenyezaigaibian。shouyao，gouchengyanzhebidingdejingmianqiegejinglideyajingjie。genzheyinglidetianjia，yajinglihonggouyanzhegengduodejingmiangoucheng。yinci
，chuanguokaishideyajingli
，jiazhiyinhonggoutunbingershiyajinglide‘yuanhua
，jinchengjiduobianhua，zhongfuduobianhuajincheng。chengguogouchenglejinhudengzhoudeyajingli。zaixingbianlveweichaoyueanwenqijiandekaishiqijiantiaojianxia，genzhewanzhengduobianhuadeyagouzaojidengzhoujingdegoucheng，zhegeqijianwanjie。
　　(3)鍛件等軸多邊形亞構造鄙人一個形變期間恒應力的實際進程中，堅持不變。亞晶粒尺度的安穩性是通過重複多邊化—在(zai)平(ping)衡(heng)間(jian)隔(ge)下(xia)亞(ya)晶(jing)粒(li)鴻(hong)溝(gou)的(de)構(gou)成(cheng)和(he)損(sun)壞(huai)的(de)接(jie)連(lian)進(jin)程(cheng)來(lai)保(bao)證(zheng)。因(yin)此(ci)
，在(zai)最(zui)終(zhong)兩(liang)個(ge)期(qi)間(jian)中(zhong)，動(dong)態(tai)多(duo)邊(bian)化(hua)是(shi)構(gou)造(zao)構(gou)成(cheng)的(de)首(shou)要(yao)進(jin)程(cheng)。和(he)應(ying)力(li)及(ji)金(jin)屬(shu)亞(ya)構(gou)造(zao)接(jie)連(lian)改(gai)變(bian)的(de)一(yi)起(qi)，進(jin)行(xing)與(yu)形(xing)變(bian)圖(tu)的(de)上(shang)升(sheng)有(you)些(xie)相(xiang)對(dui)應(ying)￡=0.07---1直到￡max的(de)多(duo)邊(bian)化(hua)進(jin)程(cheng)。所(suo)以(yi)
，熱(re)變(bian)形(xing)的(de)這(zhe)個(ge)期(qi)間(jian)被(bei)稱(cheng)為(wei)非(fei)安(an)穩(wen)的(de)動(dong)態(tai)多(duo)邊(bian)化(hua)期(qi)間(jian)。鍛(duan)件(jian)在(zai)熱(re)形(xing)變(bian)的(de)下(xia)一(yi)個(ge)期(qi)間(jian)中(zhong)，應(ying)力(li)和(he)最(zui)終(zhong)構(gou)成(cheng)的(de)多(duo)邊(bian)形(xing)構(gou)造(zao)不(bu)再(zai)改(gai)變(bian)
，並(bing)且(qie)
，它(ta)能(neng)夠(gou)稱(cheng)為(wei)安(an)穩(wen)動(dong)態(tai)多(duo)邊(bian)化(hua)的(de)期(qi)間(jian)。